From e4a8e6a5ba30b4ea95dd1e11ff0b51190e09df80 Mon Sep 17 00:00:00 2001
From: bhavik-m <bhavikmehta2001@gmail.com>
Date: Tue, 22 Mar 2022 21:47:41 +0530
Subject: [PATCH] added on polygon

---
 contracts/polygon/common/basic.sol                              | 1 +
 contracts/polygon/common/interfaces.sol                         | 1 +
 contracts/polygon/common/math.sol                               | 1 +
 contracts/polygon/common/stores.sol                             | 1 +
 contracts/polygon/connectors/0x/events.sol                      | 1 +
 contracts/polygon/connectors/0x/helpers.sol                     | 1 +
 contracts/polygon/connectors/0x/interface.sol                   | 1 +
 contracts/polygon/connectors/0x/main.sol                        | 1 +
 contracts/polygon/connectors/1inch/1inch-v3/events.sol          | 1 +
 contracts/polygon/connectors/1inch/1inch-v3/helpers.sol         | 1 +
 contracts/polygon/connectors/1inch/1inch-v3/interface.sol       | 1 +
 contracts/polygon/connectors/1inch/1inch-v3/main.sol            | 1 +
 contracts/polygon/connectors/1inch/1inch-v4/events.sol          | 1 +
 contracts/polygon/connectors/1inch/1inch-v4/helpers.sol         | 1 +
 contracts/polygon/connectors/1inch/1inch-v4/interface.sol       | 1 +
 contracts/polygon/connectors/1inch/1inch-v4/main.sol            | 1 +
 contracts/polygon/connectors/aave/aave-rewards/events.sol       | 1 +
 contracts/polygon/connectors/aave/aave-rewards/helpers.sol      | 1 +
 contracts/polygon/connectors/aave/aave-rewards/interface.sol    | 1 +
 contracts/polygon/connectors/aave/aave-rewards/main.sol         | 1 +
 contracts/polygon/connectors/aave/v2-to-v3-import/events.sol    | 1 +
 contracts/polygon/connectors/aave/v2-to-v3-import/helpers.sol   | 1 +
 .../polygon/connectors/aave/v2-to-v3-import/interfaces.sol      | 1 +
 contracts/polygon/connectors/aave/v2-to-v3-import/main.sol      | 1 +
 contracts/polygon/connectors/aave/v2/events.sol                 | 1 +
 contracts/polygon/connectors/aave/v2/helpers.sol                | 1 +
 contracts/polygon/connectors/aave/v2/interface.sol              | 1 +
 contracts/polygon/connectors/aave/v2/main.sol                   | 1 +
 contracts/polygon/connectors/aave/v3-import/events.sol          | 1 +
 contracts/polygon/connectors/aave/v3-import/helpers.sol         | 1 +
 contracts/polygon/connectors/aave/v3-import/interface.sol       | 1 +
 contracts/polygon/connectors/aave/v3-import/main.sol            | 1 +
 contracts/polygon/connectors/aave/v3/events.sol                 | 1 +
 contracts/polygon/connectors/aave/v3/helpers.sol                | 1 +
 contracts/polygon/connectors/aave/v3/interface.sol              | 1 +
 contracts/polygon/connectors/aave/v3/main.sol                   | 1 +
 contracts/polygon/connectors/authority/events.sol               | 1 +
 contracts/polygon/connectors/authority/helpers.sol              | 1 +
 contracts/polygon/connectors/authority/interface.sol            | 1 +
 contracts/polygon/connectors/authority/main.sol                 | 1 +
 contracts/polygon/connectors/basic/events.sol                   | 1 +
 contracts/polygon/connectors/basic/main.sol                     | 1 +
 contracts/polygon/connectors/instapool_v4/events.sol            | 1 +
 contracts/polygon/connectors/instapool_v4/interfaces.sol        | 1 +
 contracts/polygon/connectors/instapool_v4/main.sol              | 1 +
 contracts/polygon/connectors/instapool_v4/variables.sol         | 1 +
 contracts/polygon/connectors/mstable/events.sol                 | 1 +
 contracts/polygon/connectors/mstable/helpers.sol                | 1 +
 contracts/polygon/connectors/mstable/interface.sol              | 1 +
 contracts/polygon/connectors/mstable/main.sol                   | 1 +
 contracts/polygon/connectors/paraswap/events.sol                | 1 +
 contracts/polygon/connectors/paraswap/helpers.sol               | 1 +
 contracts/polygon/connectors/paraswap/interface.sol             | 1 +
 contracts/polygon/connectors/paraswap/main.sol                  | 1 +
 contracts/polygon/connectors/pooltogether/events.sol            | 1 +
 contracts/polygon/connectors/pooltogether/interface.sol         | 1 +
 contracts/polygon/connectors/pooltogether/main.sol              | 1 +
 contracts/polygon/connectors/quickswap/events.sol               | 1 +
 contracts/polygon/connectors/quickswap/helpers.sol              | 1 +
 contracts/polygon/connectors/quickswap/interface.sol            | 1 +
 contracts/polygon/connectors/quickswap/main.sol                 | 1 +
 contracts/polygon/connectors/uniswap/v3/events.sol              | 1 +
 contracts/polygon/connectors/uniswap/v3/helpers.sol             | 1 +
 contracts/polygon/connectors/uniswap/v3/interface.sol           | 1 +
 contracts/polygon/connectors/uniswap/v3/main.sol                | 1 +
 contracts/polygon/connectors/uniswap/v3_auto_router/events.sol  | 1 +
 contracts/polygon/connectors/uniswap/v3_auto_router/helpers.sol | 1 +
 .../polygon/connectors/uniswap/v3_auto_router/interface.sol     | 1 +
 contracts/polygon/connectors/uniswap/v3_auto_router/main.sol    | 1 +
 contracts/polygon/connectors/uniswap/v3_staker/events.sol       | 1 +
 contracts/polygon/connectors/uniswap/v3_staker/helpers.sol      | 1 +
 contracts/polygon/connectors/uniswap/v3_staker/interface.sol    | 2 +-
 contracts/polygon/connectors/uniswap/v3_staker/main.sol         | 1 +
 contracts/polygon/connectors/wmatic/events.sol                  | 1 +
 contracts/polygon/connectors/wmatic/helpers.sol                 | 1 +
 contracts/polygon/connectors/wmatic/main.sol                    | 1 +
 76 files changed, 76 insertions(+), 1 deletion(-)

diff --git a/contracts/polygon/common/basic.sol b/contracts/polygon/common/basic.sol
index a5c83c7e..94db6617 100644
--- a/contracts/polygon/common/basic.sol
+++ b/contracts/polygon/common/basic.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { TokenInterface } from "./interfaces.sol";
diff --git a/contracts/polygon/common/interfaces.sol b/contracts/polygon/common/interfaces.sol
index 24a4eb47..f843d5fb 100644
--- a/contracts/polygon/common/interfaces.sol
+++ b/contracts/polygon/common/interfaces.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface TokenInterface {
diff --git a/contracts/polygon/common/math.sol b/contracts/polygon/common/math.sol
index f6e2e6cd..7ace163d 100644
--- a/contracts/polygon/common/math.sol
+++ b/contracts/polygon/common/math.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";
diff --git a/contracts/polygon/common/stores.sol b/contracts/polygon/common/stores.sol
index 3afef234..e5e21f55 100644
--- a/contracts/polygon/common/stores.sol
+++ b/contracts/polygon/common/stores.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { MemoryInterface, InstaMapping } from "./interfaces.sol";
diff --git a/contracts/polygon/connectors/0x/events.sol b/contracts/polygon/connectors/0x/events.sol
index 66f9943a..84f4e543 100644
--- a/contracts/polygon/connectors/0x/events.sol
+++ b/contracts/polygon/connectors/0x/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/0x/helpers.sol b/contracts/polygon/connectors/0x/helpers.sol
index b90a2d77..edd8f78a 100644
--- a/contracts/polygon/connectors/0x/helpers.sol
+++ b/contracts/polygon/connectors/0x/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import {TokenInterface} from "../../common/interfaces.sol";
diff --git a/contracts/polygon/connectors/0x/interface.sol b/contracts/polygon/connectors/0x/interface.sol
index ae6016f2..2db561ef 100644
--- a/contracts/polygon/connectors/0x/interface.sol
+++ b/contracts/polygon/connectors/0x/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import {TokenInterface} from "../../common/interfaces.sol";
diff --git a/contracts/polygon/connectors/0x/main.sol b/contracts/polygon/connectors/0x/main.sol
index e47c6508..d6571b5a 100644
--- a/contracts/polygon/connectors/0x/main.sol
+++ b/contracts/polygon/connectors/0x/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/polygon/connectors/1inch/1inch-v3/events.sol b/contracts/polygon/connectors/1inch/1inch-v3/events.sol
index bec3b27a..14cd1873 100644
--- a/contracts/polygon/connectors/1inch/1inch-v3/events.sol
+++ b/contracts/polygon/connectors/1inch/1inch-v3/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/1inch/1inch-v3/helpers.sol b/contracts/polygon/connectors/1inch/1inch-v3/helpers.sol
index f52848e6..4be9a831 100644
--- a/contracts/polygon/connectors/1inch/1inch-v3/helpers.sol
+++ b/contracts/polygon/connectors/1inch/1inch-v3/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { TokenInterface } from "../../../common/interfaces.sol";
diff --git a/contracts/polygon/connectors/1inch/1inch-v3/interface.sol b/contracts/polygon/connectors/1inch/1inch-v3/interface.sol
index d2d790b7..f63b509b 100644
--- a/contracts/polygon/connectors/1inch/1inch-v3/interface.sol
+++ b/contracts/polygon/connectors/1inch/1inch-v3/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { TokenInterface } from "../../../common/interfaces.sol";
diff --git a/contracts/polygon/connectors/1inch/1inch-v3/main.sol b/contracts/polygon/connectors/1inch/1inch-v3/main.sol
index 086bb191..81a5476e 100644
--- a/contracts/polygon/connectors/1inch/1inch-v3/main.sol
+++ b/contracts/polygon/connectors/1inch/1inch-v3/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/polygon/connectors/1inch/1inch-v4/events.sol b/contracts/polygon/connectors/1inch/1inch-v4/events.sol
index bec3b27a..14cd1873 100644
--- a/contracts/polygon/connectors/1inch/1inch-v4/events.sol
+++ b/contracts/polygon/connectors/1inch/1inch-v4/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/1inch/1inch-v4/helpers.sol b/contracts/polygon/connectors/1inch/1inch-v4/helpers.sol
index b569d2d6..31371bcf 100644
--- a/contracts/polygon/connectors/1inch/1inch-v4/helpers.sol
+++ b/contracts/polygon/connectors/1inch/1inch-v4/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { TokenInterface } from "../../../common/interfaces.sol";
diff --git a/contracts/polygon/connectors/1inch/1inch-v4/interface.sol b/contracts/polygon/connectors/1inch/1inch-v4/interface.sol
index d2d790b7..f63b509b 100644
--- a/contracts/polygon/connectors/1inch/1inch-v4/interface.sol
+++ b/contracts/polygon/connectors/1inch/1inch-v4/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { TokenInterface } from "../../../common/interfaces.sol";
diff --git a/contracts/polygon/connectors/1inch/1inch-v4/main.sol b/contracts/polygon/connectors/1inch/1inch-v4/main.sol
index 40db7077..39bf1933 100644
--- a/contracts/polygon/connectors/1inch/1inch-v4/main.sol
+++ b/contracts/polygon/connectors/1inch/1inch-v4/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/polygon/connectors/aave/aave-rewards/events.sol b/contracts/polygon/connectors/aave/aave-rewards/events.sol
index 7fb14419..ec8f2468 100644
--- a/contracts/polygon/connectors/aave/aave-rewards/events.sol
+++ b/contracts/polygon/connectors/aave/aave-rewards/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/aave/aave-rewards/helpers.sol b/contracts/polygon/connectors/aave/aave-rewards/helpers.sol
index 289ebaee..dc8c5736 100644
--- a/contracts/polygon/connectors/aave/aave-rewards/helpers.sol
+++ b/contracts/polygon/connectors/aave/aave-rewards/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { DSMath } from "../../../common/math.sol";
diff --git a/contracts/polygon/connectors/aave/aave-rewards/interface.sol b/contracts/polygon/connectors/aave/aave-rewards/interface.sol
index d50d1860..3687732e 100644
--- a/contracts/polygon/connectors/aave/aave-rewards/interface.sol
+++ b/contracts/polygon/connectors/aave/aave-rewards/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface AaveIncentivesInterface {
diff --git a/contracts/polygon/connectors/aave/aave-rewards/main.sol b/contracts/polygon/connectors/aave/aave-rewards/main.sol
index da49f2bc..08c42938 100644
--- a/contracts/polygon/connectors/aave/aave-rewards/main.sol
+++ b/contracts/polygon/connectors/aave/aave-rewards/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 
diff --git a/contracts/polygon/connectors/aave/v2-to-v3-import/events.sol b/contracts/polygon/connectors/aave/v2-to-v3-import/events.sol
index 84bb146f..27ad6262 100644
--- a/contracts/polygon/connectors/aave/v2-to-v3-import/events.sol
+++ b/contracts/polygon/connectors/aave/v2-to-v3-import/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/aave/v2-to-v3-import/helpers.sol b/contracts/polygon/connectors/aave/v2-to-v3-import/helpers.sol
index f6c0c979..92b1320e 100644
--- a/contracts/polygon/connectors/aave/v2-to-v3-import/helpers.sol
+++ b/contracts/polygon/connectors/aave/v2-to-v3-import/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { DSMath } from "../../../common/math.sol";
diff --git a/contracts/polygon/connectors/aave/v2-to-v3-import/interfaces.sol b/contracts/polygon/connectors/aave/v2-to-v3-import/interfaces.sol
index b28f49e0..3ab8a83e 100644
--- a/contracts/polygon/connectors/aave/v2-to-v3-import/interfaces.sol
+++ b/contracts/polygon/connectors/aave/v2-to-v3-import/interfaces.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/polygon/connectors/aave/v2-to-v3-import/main.sol b/contracts/polygon/connectors/aave/v2-to-v3-import/main.sol
index e4915292..8f444ee4 100644
--- a/contracts/polygon/connectors/aave/v2-to-v3-import/main.sol
+++ b/contracts/polygon/connectors/aave/v2-to-v3-import/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/polygon/connectors/aave/v2/events.sol b/contracts/polygon/connectors/aave/v2/events.sol
index 805b2209..a89e15e4 100644
--- a/contracts/polygon/connectors/aave/v2/events.sol
+++ b/contracts/polygon/connectors/aave/v2/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/aave/v2/helpers.sol b/contracts/polygon/connectors/aave/v2/helpers.sol
index 3d97d0a0..45515089 100644
--- a/contracts/polygon/connectors/aave/v2/helpers.sol
+++ b/contracts/polygon/connectors/aave/v2/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { DSMath } from "../../../common/math.sol";
diff --git a/contracts/polygon/connectors/aave/v2/interface.sol b/contracts/polygon/connectors/aave/v2/interface.sol
index ab17fd22..bf578e7d 100644
--- a/contracts/polygon/connectors/aave/v2/interface.sol
+++ b/contracts/polygon/connectors/aave/v2/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface AaveInterface {
diff --git a/contracts/polygon/connectors/aave/v2/main.sol b/contracts/polygon/connectors/aave/v2/main.sol
index 5dc8578c..6301515c 100644
--- a/contracts/polygon/connectors/aave/v2/main.sol
+++ b/contracts/polygon/connectors/aave/v2/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**
diff --git a/contracts/polygon/connectors/aave/v3-import/events.sol b/contracts/polygon/connectors/aave/v3-import/events.sol
index 08013251..03aafca4 100644
--- a/contracts/polygon/connectors/aave/v3-import/events.sol
+++ b/contracts/polygon/connectors/aave/v3-import/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/polygon/connectors/aave/v3-import/helpers.sol b/contracts/polygon/connectors/aave/v3-import/helpers.sol
index eb054b6f..ebad1560 100644
--- a/contracts/polygon/connectors/aave/v3-import/helpers.sol
+++ b/contracts/polygon/connectors/aave/v3-import/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { DSMath } from "../../../common/math.sol";
diff --git a/contracts/polygon/connectors/aave/v3-import/interface.sol b/contracts/polygon/connectors/aave/v3-import/interface.sol
index 2085007b..384e7369 100644
--- a/contracts/polygon/connectors/aave/v3-import/interface.sol
+++ b/contracts/polygon/connectors/aave/v3-import/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface AaveInterface {
diff --git a/contracts/polygon/connectors/aave/v3-import/main.sol b/contracts/polygon/connectors/aave/v3-import/main.sol
index a43102c5..4a3b38e7 100644
--- a/contracts/polygon/connectors/aave/v3-import/main.sol
+++ b/contracts/polygon/connectors/aave/v3-import/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 /**
diff --git a/contracts/polygon/connectors/aave/v3/events.sol b/contracts/polygon/connectors/aave/v3/events.sol
index 9f60f22b..09c88ea7 100644
--- a/contracts/polygon/connectors/aave/v3/events.sol
+++ b/contracts/polygon/connectors/aave/v3/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/aave/v3/helpers.sol b/contracts/polygon/connectors/aave/v3/helpers.sol
index 28447ee0..567e9ddd 100644
--- a/contracts/polygon/connectors/aave/v3/helpers.sol
+++ b/contracts/polygon/connectors/aave/v3/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { DSMath } from "../../../common/math.sol";
diff --git a/contracts/polygon/connectors/aave/v3/interface.sol b/contracts/polygon/connectors/aave/v3/interface.sol
index 8ae14716..81553143 100644
--- a/contracts/polygon/connectors/aave/v3/interface.sol
+++ b/contracts/polygon/connectors/aave/v3/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface AaveInterface {
diff --git a/contracts/polygon/connectors/aave/v3/main.sol b/contracts/polygon/connectors/aave/v3/main.sol
index 3a9ffc6e..4d454a3d 100644
--- a/contracts/polygon/connectors/aave/v3/main.sol
+++ b/contracts/polygon/connectors/aave/v3/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**
diff --git a/contracts/polygon/connectors/authority/events.sol b/contracts/polygon/connectors/authority/events.sol
index 1ad38da7..f12a248d 100644
--- a/contracts/polygon/connectors/authority/events.sol
+++ b/contracts/polygon/connectors/authority/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/authority/helpers.sol b/contracts/polygon/connectors/authority/helpers.sol
index e66172b1..f9bb3c74 100644
--- a/contracts/polygon/connectors/authority/helpers.sol
+++ b/contracts/polygon/connectors/authority/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/polygon/connectors/authority/interface.sol b/contracts/polygon/connectors/authority/interface.sol
index 5b7fde6d..6420f80d 100644
--- a/contracts/polygon/connectors/authority/interface.sol
+++ b/contracts/polygon/connectors/authority/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/polygon/connectors/authority/main.sol b/contracts/polygon/connectors/authority/main.sol
index e89a75cc..d31973ec 100644
--- a/contracts/polygon/connectors/authority/main.sol
+++ b/contracts/polygon/connectors/authority/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**
diff --git a/contracts/polygon/connectors/basic/events.sol b/contracts/polygon/connectors/basic/events.sol
index b68f3801..6ce85a22 100644
--- a/contracts/polygon/connectors/basic/events.sol
+++ b/contracts/polygon/connectors/basic/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/basic/main.sol b/contracts/polygon/connectors/basic/main.sol
index 90ab72a7..b2c3ca6d 100644
--- a/contracts/polygon/connectors/basic/main.sol
+++ b/contracts/polygon/connectors/basic/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 
diff --git a/contracts/polygon/connectors/instapool_v4/events.sol b/contracts/polygon/connectors/instapool_v4/events.sol
index 9fc1cd40..d7680fb2 100644
--- a/contracts/polygon/connectors/instapool_v4/events.sol
+++ b/contracts/polygon/connectors/instapool_v4/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity >=0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/polygon/connectors/instapool_v4/interfaces.sol b/contracts/polygon/connectors/instapool_v4/interfaces.sol
index c5a40fd4..cfa70af8 100644
--- a/contracts/polygon/connectors/instapool_v4/interfaces.sol
+++ b/contracts/polygon/connectors/instapool_v4/interfaces.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity >=0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/polygon/connectors/instapool_v4/main.sol b/contracts/polygon/connectors/instapool_v4/main.sol
index d11e9639..cba5b36e 100644
--- a/contracts/polygon/connectors/instapool_v4/main.sol
+++ b/contracts/polygon/connectors/instapool_v4/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/polygon/connectors/instapool_v4/variables.sol b/contracts/polygon/connectors/instapool_v4/variables.sol
index fc2cae72..2a3a7ada 100644
--- a/contracts/polygon/connectors/instapool_v4/variables.sol
+++ b/contracts/polygon/connectors/instapool_v4/variables.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/polygon/connectors/mstable/events.sol b/contracts/polygon/connectors/mstable/events.sol
index c463b75d..4f067202 100644
--- a/contracts/polygon/connectors/mstable/events.sol
+++ b/contracts/polygon/connectors/mstable/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.6;
 
 contract Events {
diff --git a/contracts/polygon/connectors/mstable/helpers.sol b/contracts/polygon/connectors/mstable/helpers.sol
index d4330fb6..bae06ab3 100644
--- a/contracts/polygon/connectors/mstable/helpers.sol
+++ b/contracts/polygon/connectors/mstable/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.6;
 
 import { DSMath } from "../../common/math.sol";
diff --git a/contracts/polygon/connectors/mstable/interface.sol b/contracts/polygon/connectors/mstable/interface.sol
index 028b728f..8872cf7d 100644
--- a/contracts/polygon/connectors/mstable/interface.sol
+++ b/contracts/polygon/connectors/mstable/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.6;
 
 interface IMasset {
diff --git a/contracts/polygon/connectors/mstable/main.sol b/contracts/polygon/connectors/mstable/main.sol
index d2939fb8..2cdb9e61 100644
--- a/contracts/polygon/connectors/mstable/main.sol
+++ b/contracts/polygon/connectors/mstable/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.6;
 
 /**
diff --git a/contracts/polygon/connectors/paraswap/events.sol b/contracts/polygon/connectors/paraswap/events.sol
index 0f9470dc..dcba616e 100644
--- a/contracts/polygon/connectors/paraswap/events.sol
+++ b/contracts/polygon/connectors/paraswap/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/paraswap/helpers.sol b/contracts/polygon/connectors/paraswap/helpers.sol
index 9da20913..f025e726 100644
--- a/contracts/polygon/connectors/paraswap/helpers.sol
+++ b/contracts/polygon/connectors/paraswap/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { DSMath } from "../../common/math.sol";
diff --git a/contracts/polygon/connectors/paraswap/interface.sol b/contracts/polygon/connectors/paraswap/interface.sol
index a63b4c77..7de1fbbf 100644
--- a/contracts/polygon/connectors/paraswap/interface.sol
+++ b/contracts/polygon/connectors/paraswap/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface AugustusSwapperInterface {
diff --git a/contracts/polygon/connectors/paraswap/main.sol b/contracts/polygon/connectors/paraswap/main.sol
index 76add82a..3f9dc057 100644
--- a/contracts/polygon/connectors/paraswap/main.sol
+++ b/contracts/polygon/connectors/paraswap/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**
diff --git a/contracts/polygon/connectors/pooltogether/events.sol b/contracts/polygon/connectors/pooltogether/events.sol
index 02b106c8..c2909815 100644
--- a/contracts/polygon/connectors/pooltogether/events.sol
+++ b/contracts/polygon/connectors/pooltogether/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { TokenFaucetInterface } from "./interface.sol";
diff --git a/contracts/polygon/connectors/pooltogether/interface.sol b/contracts/polygon/connectors/pooltogether/interface.sol
index c82d1b8b..3979fa9f 100644
--- a/contracts/polygon/connectors/pooltogether/interface.sol
+++ b/contracts/polygon/connectors/pooltogether/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface PrizePoolInterface {
diff --git a/contracts/polygon/connectors/pooltogether/main.sol b/contracts/polygon/connectors/pooltogether/main.sol
index eb120527..951c9059 100644
--- a/contracts/polygon/connectors/pooltogether/main.sol
+++ b/contracts/polygon/connectors/pooltogether/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**
diff --git a/contracts/polygon/connectors/quickswap/events.sol b/contracts/polygon/connectors/quickswap/events.sol
index 9e01ef9d..485a60b8 100644
--- a/contracts/polygon/connectors/quickswap/events.sol
+++ b/contracts/polygon/connectors/quickswap/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/quickswap/helpers.sol b/contracts/polygon/connectors/quickswap/helpers.sol
index 594b56e1..d994b323 100644
--- a/contracts/polygon/connectors/quickswap/helpers.sol
+++ b/contracts/polygon/connectors/quickswap/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { TokenInterface } from "../../common/interfaces.sol";
diff --git a/contracts/polygon/connectors/quickswap/interface.sol b/contracts/polygon/connectors/quickswap/interface.sol
index bd210215..9f5d1c24 100644
--- a/contracts/polygon/connectors/quickswap/interface.sol
+++ b/contracts/polygon/connectors/quickswap/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface IQuickSwapRouter {
diff --git a/contracts/polygon/connectors/quickswap/main.sol b/contracts/polygon/connectors/quickswap/main.sol
index ca17ce6a..38e62b4f 100644
--- a/contracts/polygon/connectors/quickswap/main.sol
+++ b/contracts/polygon/connectors/quickswap/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**
diff --git a/contracts/polygon/connectors/uniswap/v3/events.sol b/contracts/polygon/connectors/uniswap/v3/events.sol
index b464e28e..f3c9b3b8 100644
--- a/contracts/polygon/connectors/uniswap/v3/events.sol
+++ b/contracts/polygon/connectors/uniswap/v3/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/uniswap/v3/helpers.sol b/contracts/polygon/connectors/uniswap/v3/helpers.sol
index f1ae3324..acd43a74 100644
--- a/contracts/polygon/connectors/uniswap/v3/helpers.sol
+++ b/contracts/polygon/connectors/uniswap/v3/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.6;
 pragma abicoder v2;
 
diff --git a/contracts/polygon/connectors/uniswap/v3/interface.sol b/contracts/polygon/connectors/uniswap/v3/interface.sol
index f8bc6e84..76aef1cb 100644
--- a/contracts/polygon/connectors/uniswap/v3/interface.sol
+++ b/contracts/polygon/connectors/uniswap/v3/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.6;
 pragma abicoder v2;
 
diff --git a/contracts/polygon/connectors/uniswap/v3/main.sol b/contracts/polygon/connectors/uniswap/v3/main.sol
index 4cb74195..f249da57 100644
--- a/contracts/polygon/connectors/uniswap/v3/main.sol
+++ b/contracts/polygon/connectors/uniswap/v3/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.6;
 pragma abicoder v2;
 
diff --git a/contracts/polygon/connectors/uniswap/v3_auto_router/events.sol b/contracts/polygon/connectors/uniswap/v3_auto_router/events.sol
index 3a2d14e0..cfb56d40 100644
--- a/contracts/polygon/connectors/uniswap/v3_auto_router/events.sol
+++ b/contracts/polygon/connectors/uniswap/v3_auto_router/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/uniswap/v3_auto_router/helpers.sol b/contracts/polygon/connectors/uniswap/v3_auto_router/helpers.sol
index f37ebd8f..58ddf823 100644
--- a/contracts/polygon/connectors/uniswap/v3_auto_router/helpers.sol
+++ b/contracts/polygon/connectors/uniswap/v3_auto_router/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { TokenInterface } from "../../../common/interfaces.sol";
diff --git a/contracts/polygon/connectors/uniswap/v3_auto_router/interface.sol b/contracts/polygon/connectors/uniswap/v3_auto_router/interface.sol
index 08884306..4c099ee3 100644
--- a/contracts/polygon/connectors/uniswap/v3_auto_router/interface.sol
+++ b/contracts/polygon/connectors/uniswap/v3_auto_router/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { TokenInterface } from "../../../common/interfaces.sol";
diff --git a/contracts/polygon/connectors/uniswap/v3_auto_router/main.sol b/contracts/polygon/connectors/uniswap/v3_auto_router/main.sol
index b2b75c74..e23e2edd 100644
--- a/contracts/polygon/connectors/uniswap/v3_auto_router/main.sol
+++ b/contracts/polygon/connectors/uniswap/v3_auto_router/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/polygon/connectors/uniswap/v3_staker/events.sol b/contracts/polygon/connectors/uniswap/v3_staker/events.sol
index 99b98a61..cea5a42a 100644
--- a/contracts/polygon/connectors/uniswap/v3_staker/events.sol
+++ b/contracts/polygon/connectors/uniswap/v3_staker/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/uniswap/v3_staker/helpers.sol b/contracts/polygon/connectors/uniswap/v3_staker/helpers.sol
index 6ca5408c..b36d0530 100644
--- a/contracts/polygon/connectors/uniswap/v3_staker/helpers.sol
+++ b/contracts/polygon/connectors/uniswap/v3_staker/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.6;
 pragma abicoder v2;
 
diff --git a/contracts/polygon/connectors/uniswap/v3_staker/interface.sol b/contracts/polygon/connectors/uniswap/v3_staker/interface.sol
index 5c537e43..4935da19 100644
--- a/contracts/polygon/connectors/uniswap/v3_staker/interface.sol
+++ b/contracts/polygon/connectors/uniswap/v3_staker/interface.sol
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+//SPDX-License-Identifier: MIT
 pragma solidity =0.7.6;
 pragma abicoder v2;
 
diff --git a/contracts/polygon/connectors/uniswap/v3_staker/main.sol b/contracts/polygon/connectors/uniswap/v3_staker/main.sol
index 69a5c104..266e3ba9 100644
--- a/contracts/polygon/connectors/uniswap/v3_staker/main.sol
+++ b/contracts/polygon/connectors/uniswap/v3_staker/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.6;
 pragma abicoder v2;
 
diff --git a/contracts/polygon/connectors/wmatic/events.sol b/contracts/polygon/connectors/wmatic/events.sol
index f8ec366a..f1d8310f 100644
--- a/contracts/polygon/connectors/wmatic/events.sol
+++ b/contracts/polygon/connectors/wmatic/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/polygon/connectors/wmatic/helpers.sol b/contracts/polygon/connectors/wmatic/helpers.sol
index bfc084ae..75117e94 100644
--- a/contracts/polygon/connectors/wmatic/helpers.sol
+++ b/contracts/polygon/connectors/wmatic/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { TokenInterface } from "../../common/interfaces.sol";
diff --git a/contracts/polygon/connectors/wmatic/main.sol b/contracts/polygon/connectors/wmatic/main.sol
index 1f15c12b..98d2717c 100644
--- a/contracts/polygon/connectors/wmatic/main.sol
+++ b/contracts/polygon/connectors/wmatic/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**