diff --git a/package-lock.json b/package-lock.json
index 98ae352..9cc7fbb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,19 +1,19 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.20.72",
+  "version": "0.20.73",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@orionprotocol/sdk",
-      "version": "0.20.72",
+      "version": "0.20.73",
       "hasInstallScript": true,
       "license": "ISC",
       "dependencies": {
         "@babel/runtime": "^7.21.0",
         "@ethersproject/abstract-signer": "^5.7.0",
         "@ethersproject/providers": "^5.7.2",
-        "@orionprotocol/contracts": "1.22.10",
+        "@orionprotocol/contracts": "1.23.3",
         "@types/lodash.clonedeep": "^4.5.9",
         "bignumber.js": "^9.1.1",
         "bson-objectid": "^2.0.4",
@@ -2423,9 +2423,9 @@
       }
     },
     "node_modules/@orionprotocol/contracts": {
-      "version": "1.22.10",
-      "resolved": "https://registry.npmjs.org/@orionprotocol/contracts/-/contracts-1.22.10.tgz",
-      "integrity": "sha512-c9cUkXs1Nv8p+EVTybwJqeXhecwm7xeycAVauhl6jYAqvKOx7PDCUjzE3Nh0tpi4xP3CLeABgNy8JAFYyvN1VA=="
+      "version": "1.23.3",
+      "resolved": "https://registry.npmjs.org/@orionprotocol/contracts/-/contracts-1.23.3.tgz",
+      "integrity": "sha512-3PBnuiUe//v7COArcm/dzFx71vxW+a9emU4PHi1zBdow+OUAa4WNb+NmNZ3AOjnx2AZKK+gWJY+zKo1zSfAOHQ=="
     },
     "node_modules/@sinclair/typebox": {
       "version": "0.27.8",
@@ -13493,9 +13493,9 @@
       }
     },
     "@orionprotocol/contracts": {
-      "version": "1.22.10",
-      "resolved": "https://registry.npmjs.org/@orionprotocol/contracts/-/contracts-1.22.10.tgz",
-      "integrity": "sha512-c9cUkXs1Nv8p+EVTybwJqeXhecwm7xeycAVauhl6jYAqvKOx7PDCUjzE3Nh0tpi4xP3CLeABgNy8JAFYyvN1VA=="
+      "version": "1.23.3",
+      "resolved": "https://registry.npmjs.org/@orionprotocol/contracts/-/contracts-1.23.3.tgz",
+      "integrity": "sha512-3PBnuiUe//v7COArcm/dzFx71vxW+a9emU4PHi1zBdow+OUAa4WNb+NmNZ3AOjnx2AZKK+gWJY+zKo1zSfAOHQ=="
     },
     "@sinclair/typebox": {
       "version": "0.27.8",
diff --git a/package.json b/package.json
index 471d681..690319a 100644
--- a/package.json
+++ b/package.json
@@ -89,7 +89,7 @@
     "@babel/runtime": "^7.21.0",
     "@ethersproject/abstract-signer": "^5.7.0",
     "@ethersproject/providers": "^5.7.2",
-    "@orionprotocol/contracts": "1.22.10",
+    "@orionprotocol/contracts": "1.23.3",
     "@types/lodash.clonedeep": "^4.5.9",
     "bignumber.js": "^9.1.1",
     "bson-objectid": "^2.0.4",
diff --git a/src/Unit/Exchange/generateSwapCalldata.ts b/src/Unit/Exchange/generateSwapCalldata.ts
index 91f3fe6..fd7fe08 100644
--- a/src/Unit/Exchange/generateSwapCalldata.ts
+++ b/src/Unit/Exchange/generateSwapCalldata.ts
@@ -397,7 +397,7 @@ async function shouldUseExchangeBalance(
   let useExchangeBalance = true;
   let additionalTransferAmount = 0n;
 
-  if (exchangeBalance == 0n) {
+  if (walletBalance >= amount || exchangeBalance == 0n) {
     useExchangeBalance = false;
     additionalTransferAmount = amount;
   } else {
diff --git a/src/config/chains.json b/src/config/chains.json
index bed5a5d..9d21aae 100644
--- a/src/config/chains.json
+++ b/src/config/chains.json
@@ -219,5 +219,18 @@
       "WETH": "0xe5d7c2a44ffddf6b295a15c148167daaaf5cf34f",
       "curveRegistry": ""
     }
+  },
+  "43114": {
+    "chainId": "43114",
+    "label": "Avalanche Network",
+    "shortName": "Avax",
+    "code": "avax",
+    "baseCurrencyName": "AVAX",
+    "rpc": "https://api.avax.network/ext/bc/C/rpc/",
+    "explorer": "https://snowtrace.io/",
+    "contracts": {
+      "WETH": "0xB31f66AA3C1e785363F0875A1B74E27b85FD66c7",
+      "curveRegistry": ""
+    }
   }
 }
diff --git a/src/config/envs.json b/src/config/envs.json
index 6628b38..a6c3988 100644
--- a/src/config/envs.json
+++ b/src/config/envs.json
@@ -164,6 +164,24 @@
             "http": "/orion-indexer/"
           }
         }
+      },
+      "43114": {
+        "api": "https://trade.orion.xyz/avalanche-c-chain",
+        "services": {
+          "aggregator": {
+            "http": "/backend",
+            "ws": "/v1"
+          },
+          "blockchain": {
+            "http": ""
+          },
+          "priceFeed": {
+            "all": "/price-feed"
+          },
+          "indexer": {
+            "http": "/orion-indexer/"
+          }
+        }
       }
     }
   },
@@ -445,6 +463,24 @@
             "http": "/orion-indexer/"
           }
         }
+      },
+      "43114": {
+        "api": "https://trade.orion.xyz/avalanche-c-chain",
+        "services": {
+          "aggregator": {
+            "http": "/backend",
+            "ws": "/v1"
+          },
+          "blockchain": {
+            "http": ""
+          },
+          "priceFeed": {
+            "all": "/price-feed"
+          },
+          "indexer": {
+            "http": "/orion-indexer/"
+          }
+        }
       }
     }
   },
diff --git a/src/constants/chains.ts b/src/constants/chains.ts
index 0e0b025..aac8213 100644
--- a/src/constants/chains.ts
+++ b/src/constants/chains.ts
@@ -19,4 +19,5 @@ export const productionChains = [
   SupportedChainId.OPBNB,
   SupportedChainId.INEVM,
   SupportedChainId.LINEA,
+  SupportedChainId.AVAX,
 ];
diff --git a/src/constants/networkCodes.ts b/src/constants/networkCodes.ts
index 74b0d0f..c3a5dad 100644
--- a/src/constants/networkCodes.ts
+++ b/src/constants/networkCodes.ts
@@ -1 +1 @@
-export default ['ftm', 'bsc', 'eth', 'polygon', 'okc', 'arb', 'drip', 'opbnb', 'inevm', 'linea'] as const;
+export default ['ftm', 'bsc', 'eth', 'polygon', 'okc', 'arb', 'drip', 'opbnb', 'inevm', 'linea', 'avax'] as const;
diff --git a/src/constants/uppercasedNetworkCodes.ts b/src/constants/uppercasedNetworkCodes.ts
index f3c9515..6b8e312 100644
--- a/src/constants/uppercasedNetworkCodes.ts
+++ b/src/constants/uppercasedNetworkCodes.ts
@@ -1 +1 @@
-export default ['FTM', 'BSC', 'ETH', 'POLYGON', 'OKC', 'ARB', 'OPBNB', 'INEVM', 'LINEA'] as const;
+export default ['FTM', 'BSC', 'ETH', 'POLYGON', 'OKC', 'ARB', 'OPBNB', 'INEVM', 'LINEA', 'AVAX'] as const;
diff --git a/src/types.ts b/src/types.ts
index 0f1bbb3..5828296 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -90,6 +90,7 @@ export enum SupportedChainId {
   OPBNB = '204',
   INEVM = '2525',
   LINEA = '59144',
+  AVAX = '43114',
 
   POLYGON_TESTNET = '80001',
   FANTOM_TESTNET = '4002',