diff --git a/server/package-lock.json b/server/package-lock.json
index f034f04..a3de865 100644
--- a/server/package-lock.json
+++ b/server/package-lock.json
@@ -8,7 +8,7 @@
       "name": "claim-bff",
       "version": "1.0.0",
       "dependencies": {
-        "@emurgo/cardano-serialization-lib-nodejs": "^11.5.0",
+        "@emurgo/cardano-serialization-lib-nodejs": "^12.1.0",
         "@reqlez/express-openapi": "^2.1.2",
         "@types/validator": "^13.12.2",
         "axios": "^1.7.7",
@@ -307,9 +307,9 @@
       "peer": true
     },
     "node_modules/@emurgo/cardano-serialization-lib-nodejs": {
-      "version": "11.5.0",
-      "resolved": "https://registry.npmjs.org/@emurgo/cardano-serialization-lib-nodejs/-/cardano-serialization-lib-nodejs-11.5.0.tgz",
-      "integrity": "sha512-IlVABlRgo9XaTR1NunwZpWcxnfEv04ba2l1vkUz4S1W7Jt36F4CtffP+jPeqBZGnAe+fnUwo0XjIJC3ZTNToNQ=="
+      "version": "12.1.0",
+      "resolved": "https://registry.npmjs.org/@emurgo/cardano-serialization-lib-nodejs/-/cardano-serialization-lib-nodejs-12.1.0.tgz",
+      "integrity": "sha512-S2zu5bi13GNhr8/V7PpalP7VPsUIRjRKAPLMVRFpnfWu8ruD5CHAAa7Ka7+SMj4M09YLKQM+Vmx7b94v6mgCXQ=="
     },
     "node_modules/@exodus/schemasafe": {
       "version": "1.0.0-rc.9",
diff --git a/server/package.json b/server/package.json
index 8384073..d217448 100644
--- a/server/package.json
+++ b/server/package.json
@@ -21,7 +21,7 @@
   "proxy": "http://localhost:3000",
   "keywords": [],
   "dependencies": {
-    "@emurgo/cardano-serialization-lib-nodejs": "^11.5.0",
+    "@emurgo/cardano-serialization-lib-nodejs": "^12.1.0",
     "@reqlez/express-openapi": "^2.1.2",
     "@types/validator": "^13.12.2",
     "axios": "^1.7.7",