diff --git a/pom.xml b/pom.xml
index 0654246f31..c4f8603f4e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -159,7 +159,7 @@
     <google.api.version>1.35.1</google.api.version>
     <google.http.version>1.42.0</google.http.version>
     <grpc.version>1.47.0</grpc.version>
-    <protobuf.version>3.21.1</protobuf.version>
+    <protobuf.version>3.21.2</protobuf.version>
     <opencensus.version>0.31.1</opencensus.version>
     <annotations-api.version>1.3.2</annotations-api.version>
     <guava.version>31.1-jre</guava.version>