diff --git a/packages/client/package.json b/packages/client/package.json
index 62122a2c..d4bc9591 100644
--- a/packages/client/package.json
+++ b/packages/client/package.json
@@ -22,7 +22,7 @@
   "dependencies": {
     "@ledgerhq/hw-transport": "^6.35.2",
     "@ledgerhq/wallet-api-core": "workspace:*",
-    "bignumber.js": "^9.1.2"
+    "bignumber.js": "^11.0.0"
   },
   "devDependencies": {
     "@ledgerhq/jest-shared-config": "workspace:*",
diff --git a/packages/core/package.json b/packages/core/package.json
index bf53b34e..97495352 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -33,7 +33,7 @@
     "@ledgerhq/errors": "^6.35.0",
     "@stacks/transactions": "^6.13.0",
     "@ton/core": "^0.62.0",
-    "bignumber.js": "^9.1.2",
+    "bignumber.js": "^11.0.0",
     "zod": "^4.4.3"
   }
 }
diff --git a/packages/server/package.json b/packages/server/package.json
index 17a1ad5e..5eaacc81 100644
--- a/packages/server/package.json
+++ b/packages/server/package.json
@@ -31,7 +31,7 @@
   },
   "dependencies": {
     "@ledgerhq/wallet-api-core": "workspace:*",
-    "bignumber.js": "^9.1.2",
+    "bignumber.js": "^11.0.0",
     "picomatch": "^4.0.4"
   }
 }
diff --git a/packages/simulator/package.json b/packages/simulator/package.json
index 355d2e03..f701c453 100644
--- a/packages/simulator/package.json
+++ b/packages/simulator/package.json
@@ -24,7 +24,7 @@
     "@types/jest": "^30.0.0",
     "@types/node": "^25.9.1",
     "@types/ws": "^8.18.1",
-    "bignumber.js": "^9.1.2",
+    "bignumber.js": "^11.0.0",
     "eslint": "^10.4.1",
     "jest": "^30.4.2",
     "jest-environment-jsdom": "^30.4.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index ecc5041c..0c204d16 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -273,8 +273,8 @@ importers:
         specifier: workspace:*
         version: link:../core
       bignumber.js:
-        specifier: ^9.1.2
-        version: 9.3.1
+        specifier: ^11.0.0
+        version: 11.1.2
     devDependencies:
       '@ledgerhq/jest-shared-config':
         specifier: workspace:*
@@ -362,8 +362,8 @@ importers:
         specifier: ^0.62.0
         version: 0.62.0(patch_hash=9329da4fb3122df62d833d0c4d847d33a35a9457ee48997870bc044fc80b7324)(@ton/crypto@3.3.0)
       bignumber.js:
-        specifier: ^9.1.2
-        version: 9.3.1
+        specifier: ^11.0.0
+        version: 11.1.2
       zod:
         specifier: ^4.4.3
         version: 4.4.3
@@ -524,8 +524,8 @@ importers:
         specifier: workspace:*
         version: link:../core
       bignumber.js:
-        specifier: ^9.1.2
-        version: 9.3.1
+        specifier: ^11.0.0
+        version: 11.1.2
       picomatch:
         specifier: ^4.0.4
         version: 4.0.4
@@ -595,8 +595,8 @@ importers:
         specifier: ^8.18.1
         version: 8.18.1
       bignumber.js:
-        specifier: ^9.1.2
-        version: 9.3.1
+        specifier: ^11.0.0
+        version: 11.1.2
       eslint:
         specifier: ^10.4.1
         version: 10.4.1(jiti@2.7.0)
@@ -3074,6 +3074,9 @@ packages:
     peerDependencies:
       react: '>=16.8'
 
+  bignumber.js@11.1.2:
+    resolution: {integrity: sha512-9idDyC15Vpk+53w4OfxEu2PqHSKFQUffrH1oTvnkJ9fduTJ032tpuI2sxS04oCzocklokWUZmWVEkTEQdLmUOQ==}
+
   bignumber.js@9.3.1:
     resolution: {integrity: sha512-Ko0uX15oIUS7wJ3Rb30Fs6SkVbLmPBAKdlm7q9+ak9bbIeFf0MwuBsQV6z7+X768/cHsfg+WlysDWJcmthjsjQ==}
 
@@ -9617,6 +9620,8 @@ snapshots:
       mathjax-full: 3.2.2
       react: 19.2.6
 
+  bignumber.js@11.1.2: {}
+
   bignumber.js@9.3.1: {}
 
   bn.js@4.12.3: {}