diff --git a/package-lock.json b/package-lock.json
index c717530b..4e62e9f6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -42,7 +42,7 @@
         "tsup": "^8.3.0",
         "turbo": "^2.1.3",
         "typescript": "^5.6.3",
-        "viem": "^2.21.29",
+        "viem": "^2.20.0",
         "vitest": "^2.1.3"
       }
     },
@@ -55,7 +55,7 @@
         "@moonbeam-network/xcm-utils": "2.2.0"
       },
       "devDependencies": {
-        "bun": "^1.1.25"
+        "bun": "^1.1.31"
       }
     },
     "node_modules/@acala-network/type-definitions": {
@@ -20216,8 +20216,8 @@
         "@polkadot/api": "^12.4.2",
         "@polkadot/api-augment": "^12.4.2",
         "@polkadot/types": "^12.4.2",
-        "@polkadot/util": "^13.0.2",
-        "@polkadot/util-crypto": "^13.0.2"
+        "@polkadot/util": "^13.1.1",
+        "@polkadot/util-crypto": "^13.1.1"
       }
     },
     "packages/config": {
@@ -20230,8 +20230,8 @@
       },
       "peerDependencies": {
         "@polkadot/types": "^12.4.2",
-        "@polkadot/util": "^13.0.2",
-        "@polkadot/util-crypto": "^13.0.2"
+        "@polkadot/util": "^13.1.1",
+        "@polkadot/util-crypto": "^13.1.1"
       }
     },
     "packages/sdk": {
@@ -20249,8 +20249,8 @@
         "@polkadot/api": "^12.4.2",
         "@polkadot/api-augment": "^12.4.2",
         "@polkadot/types": "^12.4.2",
-        "@polkadot/util": "^13.0.2",
-        "ethers": "^6.13.2",
+        "@polkadot/util": "^13.1.1",
+        "ethers": "^6.13.4",
         "viem": "^2.20.0"
       }
     },
@@ -20280,7 +20280,7 @@
       "peerDependencies": {
         "@polkadot/api": "^12.4.2",
         "@polkadot/apps-config": "^0.143.2",
-        "@polkadot/util": "^13.0.2"
+        "@polkadot/util": "^13.1.1"
       }
     },
     "packages/utils/node_modules/lru-cache": {
diff --git a/package.json b/package.json
index 06df43b9..98ab2460 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "test:acc": "turbo run test:acc",
     "test:acc:u": "turbo run test:acc -- -u",
     "prepare": "husky install",
-    "sync-deps": "syncpack fix-mismatches",
+    "sync-deps": "npx syncpack fix-mismatches",
     "changeset": "changeset",
     "changeset:version": "changeset version && npm i --package-lock-only",
     "changeset:publish": "npm run build && changeset publish"
@@ -68,7 +68,7 @@
     "tsup": "^8.3.0",
     "turbo": "^2.1.3",
     "typescript": "^5.6.3",
-    "viem": "^2.21.29",
+    "viem": "^2.20.0",
     "vitest": "^2.1.3"
   },
   "lint-staged": {
diff --git a/packages/sdk/package.json b/packages/sdk/package.json
index a34713b2..8a6b40d0 100644
--- a/packages/sdk/package.json
+++ b/packages/sdk/package.json
@@ -63,6 +63,6 @@
     "@polkadot/types": "^12.4.2",
     "@polkadot/util": "^13.1.1",
     "ethers": "^6.13.4",
-    "viem": "^2.21.29"
+    "viem": "^2.20.0"
   }
 }
diff --git a/packages/types/package.json b/packages/types/package.json
index f7d8009c..602ecafb 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -52,6 +52,6 @@
     "big.js": "^6.2.1"
   },
   "peerDependencies": {
-    "viem": "^2.21.29"
+    "viem": "^2.20.0"
   }
 }