diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..b58b603
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,5 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
diff --git a/.idea/fathom-swap-sdk.iml b/.idea/fathom-swap-sdk.iml
new file mode 100644
index 0000000..24643cc
--- /dev/null
+++ b/.idea/fathom-swap-sdk.iml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/.tmp" />
+      <excludeFolder url="file://$MODULE_DIR$/temp" />
+      <excludeFolder url="file://$MODULE_DIR$/tmp" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..8ccd23b
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/fathom-swap-sdk.iml" filepath="$PROJECT_DIR$/.idea/fathom-swap-sdk.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/src/constants.ts b/src/constants.ts
index dedd11d..b4f8430 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -6,7 +6,8 @@ export type BigintIsh = JSBI | bigint | string
 export enum ChainId {
   XDC = 50,
   AXDC = 51,
-  SEPOLIA = 11155111
+  SEPOLIA = 11155111,
+  LISK = 1135
 }
 
 export enum TradeType {
diff --git a/src/entities/token.ts b/src/entities/token.ts
index 6398bc1..d241859 100644
--- a/src/entities/token.ts
+++ b/src/entities/token.ts
@@ -59,5 +59,6 @@ export function currencyEquals(currencyA: Currency, currencyB: Currency): boolea
 export const WETH = {
   [ChainId.XDC]: new Token(ChainId.XDC, '0x951857744785E80e2De051c32EE7b25f9c458C42', 18, 'WXDC', 'Wrapped XDC'),
   [ChainId.AXDC]: new Token(ChainId.AXDC, '0xE99500AB4A413164DA49Af83B9824749059b46ce', 18, 'WXDC', 'Wrapped XDC'),
-  [ChainId.SEPOLIA]: new Token(ChainId.SEPOLIA, '0xD0dF82dE051244f04BfF3A8bB1f62E1cD39eED92', 18, 'WETH', 'Wrapped ETH')
+  [ChainId.SEPOLIA]: new Token(ChainId.SEPOLIA, '0xD0dF82dE051244f04BfF3A8bB1f62E1cD39eED92', 18, 'WETH', 'Wrapped ETH'),
+  [ChainId.LISK]: new Token(ChainId.LISK, '0x4200000000000000000000000000000000000006', 18, 'WETH', 'Wrapped ETH')
 }