diff --git a/package.json b/package.json
index 641d28b..400eb21 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "@cosmjs/proto-signing": "^0.37.0",
     "@cosmjs/stargate": "^0.37.0",
     "@cosmjs/tendermint-rpc": "^0.37.0",
-    "protobufjs": "^7.5.4",
+    "protobufjs": "^7.5.5",
     "typescript": "^5.9.3"
   },
   "devDependencies": {
diff --git a/yarn.lock b/yarn.lock
index 3cb1701..cdd36b9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -361,10 +361,10 @@ object-keys@^1.1.1:
   resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-1.1.1.tgz#1c47f272df277f3b1daf061677d9c82e2322c60e"
   integrity sha512-NuAESUOUMrlIXOfHKzD6bpPu3tYt3xvjNdRIQ+FeT0lNb4K8WR70CaDxhuNguS2XG+GjkyMwOzsN5ZktImfhLA==
 
-protobufjs@^7.5.4:
-  version "7.5.4"
-  resolved "https://registry.yarnpkg.com/protobufjs/-/protobufjs-7.5.4.tgz#885d31fe9c4b37f25d1bb600da30b1c5b37d286a"
-  integrity sha512-CvexbZtbov6jW2eXAvLukXjXUW1TzFaivC46BpWc/3BpcCysb5Vffu+B3XHMm8lVEuy2Mm4XGex8hBSg1yapPg==
+protobufjs@^7.5.5:
+  version "7.5.5"
+  resolved "https://registry.yarnpkg.com/protobufjs/-/protobufjs-7.5.5.tgz#b7089ca4410374c75150baf277353ef76db69f96"
+  integrity sha512-3wY1AxV+VBNW8Yypfd1yQY9pXnqTAN+KwQxL8iYm3/BjKYMNg4i0owhEe26PWDOMaIrzeeF98Lqd5NGz4omiIg==
   dependencies:
     "@protobufjs/aspromise" "^1.1.2"
     "@protobufjs/base64" "^1.1.2"