diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index cfed760c..3baf32e2 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -70,7 +70,7 @@ jobs:
           echo "Checking proto syntax..."
           for proto in proto/*.proto; do
             echo "  ✓ $(basename "$proto")"
-            protoc --proto_path=proto --syntax_check "$proto"
+            protoc --proto_path=proto --descriptor_set_out=/dev/null "$proto"
           done
           echo "✅ All .proto files are syntactically valid"