diff --git a/build.gradle b/build.gradle
index d75af43..5da8dd7 100644
--- a/build.gradle
+++ b/build.gradle
@@ -17,7 +17,7 @@ ext {
     fullVersion = semVersion + "+" + ('git rev-list --count HEAD'.execute().text.trim())
     nettyVersion = "4.1.78.Final"
     lombokVersion = "1.18.24"
-    protobufVersion = "3.21.2"
+    protobufVersion = "3.21.11"
     log4jVersion = "2.17.2"
     grpcVersion = "1.47.0"
     javaxVersion = "1.3.2"