diff --git a/gradle.properties b/gradle.properties
index 4129d8efc5..a25c5a79ea 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -57,7 +57,7 @@ zipkinReporterVersion=2.16.3
 
 # gRPC
 protobufGradlePluginVersion=0.8.19
-protobufVersion=3.21.2
+protobufVersion=3.21.4
 protoGoogleCommonProtosVersion=2.9.2
 javaPoetVersion=1.13.0
 shadowPluginVersion=7.1.1