diff --git a/_data/chains/eip155-333888.json b/_data/chains/eip155-333888.json
new file mode 100644
index 00000000..deee8c26
--- /dev/null
+++ b/_data/chains/eip155-333888.json
@@ -0,0 +1,21 @@
+{
+  "name": "Polis Testnet",
+  "chain": "Sparta",
+  "network": "testnet",
+  "icon": "polis",
+  "rpc": [
+    "https://sparta-rpc.polis.tech"
+  ],
+  "faucets": [
+    "https://faucet.polis.tech"
+  ],
+  "nativeCurrency": {
+    "name": "tPolis",
+    "symbol": "tPOLIS",
+    "decimals": 18
+  },
+  "infoURL": "https://polis.tech",
+  "shortName": "sparta",
+  "chainId": 333888,
+  "networkId": 333888
+}
diff --git a/_data/icons/polis.json b/_data/icons/polis.json
new file mode 100644
index 00000000..1857fb97
--- /dev/null
+++ b/_data/icons/polis.json
@@ -0,0 +1,8 @@
+[
+    {
+	"url":"ipfs://QmagWrtyApex28H2QeXcs3jJ2F7p2K7eESz3cDbHdQ3pjG",
+	"width":1050,
+	"height":1050,
+	"format":"png"
+    }
+]