diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ae2d144a8b..1194676c3c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -59,7 +59,8 @@ jobs:
           ./gradlew check \
             -Dorg.gradle.welcome=never \
             --stacktrace \
-            -Ddownloader=$downloader_type
+            -Ddownloader=$downloader_type \
+            -Dcom.google.protobuf.error_on_unsafe_pre22_gencode
 
       - name: Upload test reports when failure occurs
         uses: actions/upload-artifact@v5
diff --git a/extractor/build.gradle b/extractor/build.gradle
index 722ccb6f2a..04e9232cb4 100644
--- a/extractor/build.gradle
+++ b/extractor/build.gradle
@@ -28,7 +28,7 @@ checkstyleTest {
 
 ext {
     rhinoVersion = '1.8.0'
-    protobufVersion = '4.32.1'
+    protobufVersion = '4.33.0'
 }
 
 dependencies {