diff --git a/CHANGES.md b/CHANGES.md
index d7c7539bf2..d1d137e56d 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -14,6 +14,7 @@ Release Notes.
 * Exclude unnecessary libs when building under JDK 9+.
 * Migrate base Docker image to eclipse-temurin as adoptopenjdk is deprecated.
 * Add E2E test under Java 17.
+* Upgrade protoc to 3.19.2.
 
 #### OAP Server
 
diff --git a/pom.xml b/pom.xml
index 98df9542b5..07b2d75691 100755
--- a/pom.xml
+++ b/pom.xml
@@ -180,7 +180,7 @@
         <gson.version>2.8.6</gson.version>
         <os-maven-plugin.version>1.6.2</os-maven-plugin.version>
         <protobuf-maven-plugin.version>0.6.1</protobuf-maven-plugin.version>
-        <com.google.protobuf.protoc.version>3.17.3</com.google.protobuf.protoc.version>
+        <com.google.protobuf.protoc.version>3.19.2</com.google.protobuf.protoc.version>
         <protoc-gen-grpc-java.plugin.version>1.42.1</protoc-gen-grpc-java.plugin.version>
         <netty-tcnative-boringssl-static.version>2.0.43.Final</netty-tcnative-boringssl-static.version>
         <javax.annotation-api.version>1.3.2</javax.annotation-api.version>