diff --git a/google-cloud-bigtable/pom.xml b/google-cloud-bigtable/pom.xml
index 475d78290f..2515259ec3 100644
--- a/google-cloud-bigtable/pom.xml
+++ b/google-cloud-bigtable/pom.xml
@@ -39,7 +39,7 @@
 
     <!-- These are needed to compile the protobuf used by Changestream merging acceptance test. -->
     <test-protoc-grpc.version>1.61.1</test-protoc-grpc.version>
-    <test-protoc.version>3.25.3</test-protoc.version>
+    <test-protoc.version>4.26.1</test-protoc.version>
   </properties>
 
   <dependencyManagement>