From 5216f49e6689ec92b8ddf418b45b5672dcf3f931 Mon Sep 17 00:00:00 2001
From: bhavik-m <bhavikmehta2001@gmail.com>
Date: Tue, 22 Mar 2022 20:25:14 +0530
Subject: [PATCH] added on avax

---
 contracts/avalanche/common/basic.sol                             | 1 +
 contracts/avalanche/common/interfaces.sol                        | 1 +
 contracts/avalanche/common/math.sol                              | 1 +
 contracts/avalanche/common/stores.sol                            | 1 +
 contracts/avalanche/connectors/0x/events.sol                     | 1 +
 contracts/avalanche/connectors/0x/helpers.sol                    | 1 +
 contracts/avalanche/connectors/0x/interface.sol                  | 1 +
 contracts/avalanche/connectors/0x/main.sol                       | 1 +
 contracts/avalanche/connectors/1inch-v4/events.sol               | 1 +
 contracts/avalanche/connectors/1inch-v4/helpers.sol              | 1 +
 contracts/avalanche/connectors/1inch-v4/interface.sol            | 1 +
 contracts/avalanche/connectors/1inch-v4/main.sol                 | 1 +
 contracts/avalanche/connectors/aave/aave-rewards/events.sol      | 1 +
 contracts/avalanche/connectors/aave/aave-rewards/helpers.sol     | 1 +
 contracts/avalanche/connectors/aave/aave-rewards/interface.sol   | 1 +
 contracts/avalanche/connectors/aave/aave-rewards/main.sol        | 1 +
 contracts/avalanche/connectors/aave/v2-to-v3-import/events.sol   | 1 +
 contracts/avalanche/connectors/aave/v2-to-v3-import/helpers.sol  | 1 +
 .../avalanche/connectors/aave/v2-to-v3-import/interfaces.sol     | 1 +
 contracts/avalanche/connectors/aave/v2-to-v3-import/main.sol     | 1 +
 contracts/avalanche/connectors/aave/v2/events.sol                | 1 +
 contracts/avalanche/connectors/aave/v2/helpers.sol               | 1 +
 contracts/avalanche/connectors/aave/v2/interface.sol             | 1 +
 contracts/avalanche/connectors/aave/v2/main.sol                  | 1 +
 contracts/avalanche/connectors/aave/v3-import/events.sol         | 1 +
 contracts/avalanche/connectors/aave/v3-import/helpers.sol        | 1 +
 contracts/avalanche/connectors/aave/v3-import/interface.sol      | 1 +
 contracts/avalanche/connectors/aave/v3-import/main.sol           | 1 +
 contracts/avalanche/connectors/aave/v3/events.sol                | 1 +
 contracts/avalanche/connectors/aave/v3/helpers.sol               | 1 +
 contracts/avalanche/connectors/aave/v3/interface.sol             | 1 +
 contracts/avalanche/connectors/aave/v3/main.sol                  | 1 +
 contracts/avalanche/connectors/authority/events.sol              | 1 +
 contracts/avalanche/connectors/authority/helpers.sol             | 1 +
 contracts/avalanche/connectors/authority/interface.sol           | 1 +
 contracts/avalanche/connectors/authority/main.sol                | 1 +
 contracts/avalanche/connectors/basic/events.sol                  | 1 +
 contracts/avalanche/connectors/basic/main.sol                    | 1 +
 contracts/avalanche/connectors/benqi/benqi-rewards/events.sol    | 1 +
 contracts/avalanche/connectors/benqi/benqi-rewards/helpers.sol   | 1 +
 contracts/avalanche/connectors/benqi/benqi-rewards/interface.sol | 1 +
 contracts/avalanche/connectors/benqi/benqi-rewards/main.sol      | 1 +
 contracts/avalanche/connectors/benqi/v2/events.sol               | 1 +
 contracts/avalanche/connectors/benqi/v2/helpers.sol              | 1 +
 contracts/avalanche/connectors/benqi/v2/interface.sol            | 1 +
 contracts/avalanche/connectors/benqi/v2/main.sol                 | 1 +
 contracts/avalanche/connectors/instapool_v3/events.sol           | 1 +
 contracts/avalanche/connectors/instapool_v3/interfaces.sol       | 1 +
 contracts/avalanche/connectors/instapool_v3/main.sol             | 1 +
 contracts/avalanche/connectors/instapool_v3/variables.sol        | 1 +
 contracts/avalanche/connectors/instapool_v4/events.sol           | 1 +
 contracts/avalanche/connectors/instapool_v4/interfaces.sol       | 1 +
 contracts/avalanche/connectors/instapool_v4/main.sol             | 1 +
 contracts/avalanche/connectors/instapool_v4/variables.sol        | 1 +
 contracts/avalanche/connectors/pangolin/exchange/events.sol      | 1 +
 contracts/avalanche/connectors/pangolin/exchange/helpers.sol     | 1 +
 contracts/avalanche/connectors/pangolin/exchange/interface.sol   | 1 +
 contracts/avalanche/connectors/pangolin/exchange/main.sol        | 1 +
 contracts/avalanche/connectors/pangolin/staking/events.sol       | 1 +
 contracts/avalanche/connectors/pangolin/staking/helpers.sol      | 1 +
 contracts/avalanche/connectors/pangolin/staking/interface.sol    | 1 +
 contracts/avalanche/connectors/pangolin/staking/main.sol         | 1 +
 contracts/avalanche/connectors/paraswap/events.sol               | 1 +
 contracts/avalanche/connectors/paraswap/helpers.sol              | 1 +
 contracts/avalanche/connectors/paraswap/interface.sol            | 1 +
 contracts/avalanche/connectors/paraswap/main.sol                 | 1 +
 contracts/avalanche/connectors/wavax/events.sol                  | 1 +
 contracts/avalanche/connectors/wavax/helpers.sol                 | 1 +
 contracts/avalanche/connectors/wavax/main.sol                    | 1 +
 contracts/avalanche/mapping/benqi.sol                            | 1 +
 70 files changed, 70 insertions(+)

diff --git a/contracts/avalanche/common/basic.sol b/contracts/avalanche/common/basic.sol
index ff2c8fe9..84781c5f 100644
--- a/contracts/avalanche/common/basic.sol
+++ b/contracts/avalanche/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/avalanche/common/interfaces.sol b/contracts/avalanche/common/interfaces.sol
index ea9c362d..cffe7136 100644
--- a/contracts/avalanche/common/interfaces.sol
+++ b/contracts/avalanche/common/interfaces.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface TokenInterface {
diff --git a/contracts/avalanche/common/math.sol b/contracts/avalanche/common/math.sol
index f6e2e6cd..7ace163d 100644
--- a/contracts/avalanche/common/math.sol
+++ b/contracts/avalanche/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/avalanche/common/stores.sol b/contracts/avalanche/common/stores.sol
index aed57250..97f51614 100644
--- a/contracts/avalanche/common/stores.sol
+++ b/contracts/avalanche/common/stores.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 import { MemoryInterface } from "./interfaces.sol";
diff --git a/contracts/avalanche/connectors/0x/events.sol b/contracts/avalanche/connectors/0x/events.sol
index 66f9943a..84f4e543 100644
--- a/contracts/avalanche/connectors/0x/events.sol
+++ b/contracts/avalanche/connectors/0x/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/avalanche/connectors/0x/helpers.sol b/contracts/avalanche/connectors/0x/helpers.sol
index cefa1dee..f4e22419 100644
--- a/contracts/avalanche/connectors/0x/helpers.sol
+++ b/contracts/avalanche/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/avalanche/connectors/0x/interface.sol b/contracts/avalanche/connectors/0x/interface.sol
index ae6016f2..2db561ef 100644
--- a/contracts/avalanche/connectors/0x/interface.sol
+++ b/contracts/avalanche/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/avalanche/connectors/0x/main.sol b/contracts/avalanche/connectors/0x/main.sol
index 6c5693a5..4836721d 100644
--- a/contracts/avalanche/connectors/0x/main.sol
+++ b/contracts/avalanche/connectors/0x/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/avalanche/connectors/1inch-v4/events.sol b/contracts/avalanche/connectors/1inch-v4/events.sol
index bec3b27a..14cd1873 100644
--- a/contracts/avalanche/connectors/1inch-v4/events.sol
+++ b/contracts/avalanche/connectors/1inch-v4/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/avalanche/connectors/1inch-v4/helpers.sol b/contracts/avalanche/connectors/1inch-v4/helpers.sol
index 8582731c..003db254 100644
--- a/contracts/avalanche/connectors/1inch-v4/helpers.sol
+++ b/contracts/avalanche/connectors/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/avalanche/connectors/1inch-v4/interface.sol b/contracts/avalanche/connectors/1inch-v4/interface.sol
index f35b9277..2575866e 100644
--- a/contracts/avalanche/connectors/1inch-v4/interface.sol
+++ b/contracts/avalanche/connectors/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/avalanche/connectors/1inch-v4/main.sol b/contracts/avalanche/connectors/1inch-v4/main.sol
index f6689381..f15e81a0 100644
--- a/contracts/avalanche/connectors/1inch-v4/main.sol
+++ b/contracts/avalanche/connectors/1inch-v4/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/avalanche/connectors/aave/aave-rewards/events.sol b/contracts/avalanche/connectors/aave/aave-rewards/events.sol
index 7fb14419..ec8f2468 100644
--- a/contracts/avalanche/connectors/aave/aave-rewards/events.sol
+++ b/contracts/avalanche/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/avalanche/connectors/aave/aave-rewards/helpers.sol b/contracts/avalanche/connectors/aave/aave-rewards/helpers.sol
index f3ea8e66..9f4ff500 100644
--- a/contracts/avalanche/connectors/aave/aave-rewards/helpers.sol
+++ b/contracts/avalanche/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/avalanche/connectors/aave/aave-rewards/interface.sol b/contracts/avalanche/connectors/aave/aave-rewards/interface.sol
index d50d1860..3687732e 100644
--- a/contracts/avalanche/connectors/aave/aave-rewards/interface.sol
+++ b/contracts/avalanche/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/avalanche/connectors/aave/aave-rewards/main.sol b/contracts/avalanche/connectors/aave/aave-rewards/main.sol
index e982793e..d18a80e2 100644
--- a/contracts/avalanche/connectors/aave/aave-rewards/main.sol
+++ b/contracts/avalanche/connectors/aave/aave-rewards/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 
diff --git a/contracts/avalanche/connectors/aave/v2-to-v3-import/events.sol b/contracts/avalanche/connectors/aave/v2-to-v3-import/events.sol
index 7ba066a2..95f07b64 100644
--- a/contracts/avalanche/connectors/aave/v2-to-v3-import/events.sol
+++ b/contracts/avalanche/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/avalanche/connectors/aave/v2-to-v3-import/helpers.sol b/contracts/avalanche/connectors/aave/v2-to-v3-import/helpers.sol
index 2cb8a3f3..a81b6211 100644
--- a/contracts/avalanche/connectors/aave/v2-to-v3-import/helpers.sol
+++ b/contracts/avalanche/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/avalanche/connectors/aave/v2-to-v3-import/interfaces.sol b/contracts/avalanche/connectors/aave/v2-to-v3-import/interfaces.sol
index b28f49e0..3ab8a83e 100644
--- a/contracts/avalanche/connectors/aave/v2-to-v3-import/interfaces.sol
+++ b/contracts/avalanche/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/avalanche/connectors/aave/v2-to-v3-import/main.sol b/contracts/avalanche/connectors/aave/v2-to-v3-import/main.sol
index c9b992b6..534e76d9 100644
--- a/contracts/avalanche/connectors/aave/v2-to-v3-import/main.sol
+++ b/contracts/avalanche/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/avalanche/connectors/aave/v2/events.sol b/contracts/avalanche/connectors/aave/v2/events.sol
index 805b2209..a89e15e4 100644
--- a/contracts/avalanche/connectors/aave/v2/events.sol
+++ b/contracts/avalanche/connectors/aave/v2/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/avalanche/connectors/aave/v2/helpers.sol b/contracts/avalanche/connectors/aave/v2/helpers.sol
index cb1f13ef..3f7dc223 100644
--- a/contracts/avalanche/connectors/aave/v2/helpers.sol
+++ b/contracts/avalanche/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/avalanche/connectors/aave/v2/interface.sol b/contracts/avalanche/connectors/aave/v2/interface.sol
index ab17fd22..bf578e7d 100644
--- a/contracts/avalanche/connectors/aave/v2/interface.sol
+++ b/contracts/avalanche/connectors/aave/v2/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface AaveInterface {
diff --git a/contracts/avalanche/connectors/aave/v2/main.sol b/contracts/avalanche/connectors/aave/v2/main.sol
index 3dd6239a..6ae9d88f 100644
--- a/contracts/avalanche/connectors/aave/v2/main.sol
+++ b/contracts/avalanche/connectors/aave/v2/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**
diff --git a/contracts/avalanche/connectors/aave/v3-import/events.sol b/contracts/avalanche/connectors/aave/v3-import/events.sol
index 08013251..03aafca4 100644
--- a/contracts/avalanche/connectors/aave/v3-import/events.sol
+++ b/contracts/avalanche/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/avalanche/connectors/aave/v3-import/helpers.sol b/contracts/avalanche/connectors/aave/v3-import/helpers.sol
index 357de5f4..c0844f37 100644
--- a/contracts/avalanche/connectors/aave/v3-import/helpers.sol
+++ b/contracts/avalanche/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";
 import { Basic } from "../../../common/basic.sol";
diff --git a/contracts/avalanche/connectors/aave/v3-import/interface.sol b/contracts/avalanche/connectors/aave/v3-import/interface.sol
index 4cce4a80..d7f4f48c 100644
--- a/contracts/avalanche/connectors/aave/v3-import/interface.sol
+++ b/contracts/avalanche/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/avalanche/connectors/aave/v3-import/main.sol b/contracts/avalanche/connectors/aave/v3-import/main.sol
index 8d183d87..e242bdc8 100644
--- a/contracts/avalanche/connectors/aave/v3-import/main.sol
+++ b/contracts/avalanche/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/avalanche/connectors/aave/v3/events.sol b/contracts/avalanche/connectors/aave/v3/events.sol
index 9f60f22b..09c88ea7 100644
--- a/contracts/avalanche/connectors/aave/v3/events.sol
+++ b/contracts/avalanche/connectors/aave/v3/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/avalanche/connectors/aave/v3/helpers.sol b/contracts/avalanche/connectors/aave/v3/helpers.sol
index 6c2f581e..d4c06017 100644
--- a/contracts/avalanche/connectors/aave/v3/helpers.sol
+++ b/contracts/avalanche/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/avalanche/connectors/aave/v3/interface.sol b/contracts/avalanche/connectors/aave/v3/interface.sol
index 8ae14716..81553143 100644
--- a/contracts/avalanche/connectors/aave/v3/interface.sol
+++ b/contracts/avalanche/connectors/aave/v3/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface AaveInterface {
diff --git a/contracts/avalanche/connectors/aave/v3/main.sol b/contracts/avalanche/connectors/aave/v3/main.sol
index aa9611fb..ea698460 100644
--- a/contracts/avalanche/connectors/aave/v3/main.sol
+++ b/contracts/avalanche/connectors/aave/v3/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**
diff --git a/contracts/avalanche/connectors/authority/events.sol b/contracts/avalanche/connectors/authority/events.sol
index 1ad38da7..f12a248d 100644
--- a/contracts/avalanche/connectors/authority/events.sol
+++ b/contracts/avalanche/connectors/authority/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/avalanche/connectors/authority/helpers.sol b/contracts/avalanche/connectors/authority/helpers.sol
index 8e4d1371..32a71f3b 100644
--- a/contracts/avalanche/connectors/authority/helpers.sol
+++ b/contracts/avalanche/connectors/authority/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/avalanche/connectors/authority/interface.sol b/contracts/avalanche/connectors/authority/interface.sol
index 5b7fde6d..6420f80d 100644
--- a/contracts/avalanche/connectors/authority/interface.sol
+++ b/contracts/avalanche/connectors/authority/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/avalanche/connectors/authority/main.sol b/contracts/avalanche/connectors/authority/main.sol
index 921627eb..910364cf 100644
--- a/contracts/avalanche/connectors/authority/main.sol
+++ b/contracts/avalanche/connectors/authority/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**
diff --git a/contracts/avalanche/connectors/basic/events.sol b/contracts/avalanche/connectors/basic/events.sol
index b68f3801..6ce85a22 100644
--- a/contracts/avalanche/connectors/basic/events.sol
+++ b/contracts/avalanche/connectors/basic/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/avalanche/connectors/basic/main.sol b/contracts/avalanche/connectors/basic/main.sol
index c674103e..3659b357 100644
--- a/contracts/avalanche/connectors/basic/main.sol
+++ b/contracts/avalanche/connectors/basic/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 
diff --git a/contracts/avalanche/connectors/benqi/benqi-rewards/events.sol b/contracts/avalanche/connectors/benqi/benqi-rewards/events.sol
index 5c6a0f6f..f15ef966 100644
--- a/contracts/avalanche/connectors/benqi/benqi-rewards/events.sol
+++ b/contracts/avalanche/connectors/benqi/benqi-rewards/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/avalanche/connectors/benqi/benqi-rewards/helpers.sol b/contracts/avalanche/connectors/benqi/benqi-rewards/helpers.sol
index 0f68782f..2c27ed8d 100644
--- a/contracts/avalanche/connectors/benqi/benqi-rewards/helpers.sol
+++ b/contracts/avalanche/connectors/benqi/benqi-rewards/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/avalanche/connectors/benqi/benqi-rewards/interface.sol b/contracts/avalanche/connectors/benqi/benqi-rewards/interface.sol
index 351fd404..477cad72 100644
--- a/contracts/avalanche/connectors/benqi/benqi-rewards/interface.sol
+++ b/contracts/avalanche/connectors/benqi/benqi-rewards/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface ComptrollerInterface {
diff --git a/contracts/avalanche/connectors/benqi/benqi-rewards/main.sol b/contracts/avalanche/connectors/benqi/benqi-rewards/main.sol
index b8c4e111..370a00d8 100644
--- a/contracts/avalanche/connectors/benqi/benqi-rewards/main.sol
+++ b/contracts/avalanche/connectors/benqi/benqi-rewards/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/avalanche/connectors/benqi/v2/events.sol b/contracts/avalanche/connectors/benqi/v2/events.sol
index 8d4295e1..550ab5fe 100644
--- a/contracts/avalanche/connectors/benqi/v2/events.sol
+++ b/contracts/avalanche/connectors/benqi/v2/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/avalanche/connectors/benqi/v2/helpers.sol b/contracts/avalanche/connectors/benqi/v2/helpers.sol
index 05b3b78e..70eb0355 100644
--- a/contracts/avalanche/connectors/benqi/v2/helpers.sol
+++ b/contracts/avalanche/connectors/benqi/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/avalanche/connectors/benqi/v2/interface.sol b/contracts/avalanche/connectors/benqi/v2/interface.sol
index c88bad9e..706fb434 100644
--- a/contracts/avalanche/connectors/benqi/v2/interface.sol
+++ b/contracts/avalanche/connectors/benqi/v2/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface QiTokenInterface {
diff --git a/contracts/avalanche/connectors/benqi/v2/main.sol b/contracts/avalanche/connectors/benqi/v2/main.sol
index a76cd40e..60176cde 100644
--- a/contracts/avalanche/connectors/benqi/v2/main.sol
+++ b/contracts/avalanche/connectors/benqi/v2/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/avalanche/connectors/instapool_v3/events.sol b/contracts/avalanche/connectors/instapool_v3/events.sol
index 9fc1cd40..d7680fb2 100644
--- a/contracts/avalanche/connectors/instapool_v3/events.sol
+++ b/contracts/avalanche/connectors/instapool_v3/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity >=0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/avalanche/connectors/instapool_v3/interfaces.sol b/contracts/avalanche/connectors/instapool_v3/interfaces.sol
index 89ae592a..4faf1bbe 100644
--- a/contracts/avalanche/connectors/instapool_v3/interfaces.sol
+++ b/contracts/avalanche/connectors/instapool_v3/interfaces.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity >=0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/avalanche/connectors/instapool_v3/main.sol b/contracts/avalanche/connectors/instapool_v3/main.sol
index 5d2efa6d..942318f8 100644
--- a/contracts/avalanche/connectors/instapool_v3/main.sol
+++ b/contracts/avalanche/connectors/instapool_v3/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/avalanche/connectors/instapool_v3/variables.sol b/contracts/avalanche/connectors/instapool_v3/variables.sol
index 8bb122c3..f258a276 100644
--- a/contracts/avalanche/connectors/instapool_v3/variables.sol
+++ b/contracts/avalanche/connectors/instapool_v3/variables.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;
 
diff --git a/contracts/avalanche/connectors/instapool_v4/events.sol b/contracts/avalanche/connectors/instapool_v4/events.sol
index 9fc1cd40..d7680fb2 100644
--- a/contracts/avalanche/connectors/instapool_v4/events.sol
+++ b/contracts/avalanche/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/avalanche/connectors/instapool_v4/interfaces.sol b/contracts/avalanche/connectors/instapool_v4/interfaces.sol
index c5a40fd4..cfa70af8 100644
--- a/contracts/avalanche/connectors/instapool_v4/interfaces.sol
+++ b/contracts/avalanche/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/avalanche/connectors/instapool_v4/main.sol b/contracts/avalanche/connectors/instapool_v4/main.sol
index d11e9639..cba5b36e 100644
--- a/contracts/avalanche/connectors/instapool_v4/main.sol
+++ b/contracts/avalanche/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/avalanche/connectors/instapool_v4/variables.sol b/contracts/avalanche/connectors/instapool_v4/variables.sol
index fc2cae72..2a3a7ada 100644
--- a/contracts/avalanche/connectors/instapool_v4/variables.sol
+++ b/contracts/avalanche/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/avalanche/connectors/pangolin/exchange/events.sol b/contracts/avalanche/connectors/pangolin/exchange/events.sol
index 2717b0a3..cd829b0c 100644
--- a/contracts/avalanche/connectors/pangolin/exchange/events.sol
+++ b/contracts/avalanche/connectors/pangolin/exchange/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/avalanche/connectors/pangolin/exchange/helpers.sol b/contracts/avalanche/connectors/pangolin/exchange/helpers.sol
index 3e56046f..6f0e7098 100644
--- a/contracts/avalanche/connectors/pangolin/exchange/helpers.sol
+++ b/contracts/avalanche/connectors/pangolin/exchange/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/avalanche/connectors/pangolin/exchange/interface.sol b/contracts/avalanche/connectors/pangolin/exchange/interface.sol
index ac308099..d294f02e 100644
--- a/contracts/avalanche/connectors/pangolin/exchange/interface.sol
+++ b/contracts/avalanche/connectors/pangolin/exchange/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity >=0.6.2;
 
 interface IPangolinRouter {
diff --git a/contracts/avalanche/connectors/pangolin/exchange/main.sol b/contracts/avalanche/connectors/pangolin/exchange/main.sol
index c4e866d9..b7925793 100644
--- a/contracts/avalanche/connectors/pangolin/exchange/main.sol
+++ b/contracts/avalanche/connectors/pangolin/exchange/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**
diff --git a/contracts/avalanche/connectors/pangolin/staking/events.sol b/contracts/avalanche/connectors/pangolin/staking/events.sol
index 84c61559..fd16ce29 100644
--- a/contracts/avalanche/connectors/pangolin/staking/events.sol
+++ b/contracts/avalanche/connectors/pangolin/staking/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/avalanche/connectors/pangolin/staking/helpers.sol b/contracts/avalanche/connectors/pangolin/staking/helpers.sol
index 34aa6e91..d52cc2ee 100644
--- a/contracts/avalanche/connectors/pangolin/staking/helpers.sol
+++ b/contracts/avalanche/connectors/pangolin/staking/helpers.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma abicoder v2;
 
diff --git a/contracts/avalanche/connectors/pangolin/staking/interface.sol b/contracts/avalanche/connectors/pangolin/staking/interface.sol
index 8f1d8bb3..f96d78f5 100644
--- a/contracts/avalanche/connectors/pangolin/staking/interface.sol
+++ b/contracts/avalanche/connectors/pangolin/staking/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity >=0.6.2;
 pragma abicoder v2;
 
diff --git a/contracts/avalanche/connectors/pangolin/staking/main.sol b/contracts/avalanche/connectors/pangolin/staking/main.sol
index 117d5909..75a3cd4b 100644
--- a/contracts/avalanche/connectors/pangolin/staking/main.sol
+++ b/contracts/avalanche/connectors/pangolin/staking/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**
diff --git a/contracts/avalanche/connectors/paraswap/events.sol b/contracts/avalanche/connectors/paraswap/events.sol
index 0f9470dc..dcba616e 100644
--- a/contracts/avalanche/connectors/paraswap/events.sol
+++ b/contracts/avalanche/connectors/paraswap/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/avalanche/connectors/paraswap/helpers.sol b/contracts/avalanche/connectors/paraswap/helpers.sol
index 7e7032a3..ef05e91d 100644
--- a/contracts/avalanche/connectors/paraswap/helpers.sol
+++ b/contracts/avalanche/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/avalanche/connectors/paraswap/interface.sol b/contracts/avalanche/connectors/paraswap/interface.sol
index a63b4c77..7de1fbbf 100644
--- a/contracts/avalanche/connectors/paraswap/interface.sol
+++ b/contracts/avalanche/connectors/paraswap/interface.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 interface AugustusSwapperInterface {
diff --git a/contracts/avalanche/connectors/paraswap/main.sol b/contracts/avalanche/connectors/paraswap/main.sol
index 1f1b163f..cdbed41e 100644
--- a/contracts/avalanche/connectors/paraswap/main.sol
+++ b/contracts/avalanche/connectors/paraswap/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**
diff --git a/contracts/avalanche/connectors/wavax/events.sol b/contracts/avalanche/connectors/wavax/events.sol
index f8ec366a..f1d8310f 100644
--- a/contracts/avalanche/connectors/wavax/events.sol
+++ b/contracts/avalanche/connectors/wavax/events.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 contract Events {
diff --git a/contracts/avalanche/connectors/wavax/helpers.sol b/contracts/avalanche/connectors/wavax/helpers.sol
index d995c62e..9745fec1 100644
--- a/contracts/avalanche/connectors/wavax/helpers.sol
+++ b/contracts/avalanche/connectors/wavax/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/avalanche/connectors/wavax/main.sol b/contracts/avalanche/connectors/wavax/main.sol
index d1c72cab..9d3a8001 100644
--- a/contracts/avalanche/connectors/wavax/main.sol
+++ b/contracts/avalanche/connectors/wavax/main.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 
 /**
diff --git a/contracts/avalanche/mapping/benqi.sol b/contracts/avalanche/mapping/benqi.sol
index 0ce2579c..9248daf0 100644
--- a/contracts/avalanche/mapping/benqi.sol
+++ b/contracts/avalanche/mapping/benqi.sol
@@ -1,3 +1,4 @@
+//SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
 pragma experimental ABIEncoderV2;