diff --git a/justfile b/justfile
index a2fe657a..f86e0734 100644
--- a/justfile
+++ b/justfile
@@ -1,6 +1,11 @@
 regenerate-protobufs:
-    protoc --proto_path=shared/protobufs/schemas --python_out=shared/protobufs/types --pyi_out=shared/protobufs/types shared/protobufs/schemas/*.proto
-    uv run ruff format ./shared/protobufs/types
+    #!/usr/bin/env bash
+    if [ -f shared/protobufs/schemas/*.proto ]; then
+        protoc --proto_path=shared/protobufs/schemas --python_out=shared/protobufs/types --pyi_out=shared/protobufs/types shared/protobufs/schemas/*.proto
+        uv run ruff format ./shared/protobufs/types
+    else
+        echo "No .proto files found in shared/protobufs/schemas/"
+    fi
 
 fmt:
     uv run ruff format master worker shared engines/*