diff --git a/build.gradle b/build.gradle
index 4d872282..ff11209c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -107,7 +107,7 @@ configure(subprojects.findAll { !it.name.startsWith("examples/") }) {
 
             // pinned to 1.23.1, see https://github.com/grpc/grpc-java/issues/6707
             mavenBom 'io.grpc:grpc-bom:1.23.1'
-            mavenBom 'com.google.protobuf:protobuf-bom:3.10.0'
+            mavenBom 'com.google.protobuf:protobuf-bom:3.21.12'
 
             mavenBom 'io.rsocket:rsocket-bom:1.1.0'
         }