diff --git a/.kokoro/build.sh b/.kokoro/build.sh
index 33de9088..0b167c44 100755
--- a/.kokoro/build.sh
+++ b/.kokoro/build.sh
@@ -65,6 +65,7 @@ integration)
     mvn -B ${INTEGRATION_TEST_ARGS} \
       -ntp \
       -Penable-integration-tests \
+      -Dprotobuf.version=4.29.4 \
       -DtrimStackTrace=false \
       -Dclirr.skip=true \
       -Denforcer.skip=true \