diff --git a/backend/windmill-worker/nsjail/download_deps.py.sh b/backend/windmill-worker/nsjail/download_deps.py.sh
index ce056e7e76..13fc00ddf9 100755
--- a/backend/windmill-worker/nsjail/download_deps.py.sh
+++ b/backend/windmill-worker/nsjail/download_deps.py.sh
@@ -31,6 +31,7 @@ $PY_PATH
 $INDEX_URL_ARG $EXTRA_INDEX_URL_ARG $TRUSTED_HOST_ARG
 --system
 --reinstall
+--compile-bytecode
 "
 
 echo $CMD
diff --git a/backend/windmill-worker/src/python_executor.rs b/backend/windmill-worker/src/python_executor.rs
index 4bec8d44bf..3895c823b7 100644
--- a/backend/windmill-worker/src/python_executor.rs
+++ b/backend/windmill-worker/src/python_executor.rs
@@ -2095,6 +2095,9 @@ async fn spawn_uv_install(
             "--no-cache",
             // If we invoke uv pip install, then we want to overwrite existing data
             "--reinstall",
+            // Compile .py to .pyc at install time so imports are fast even
+            // through read-only nsjail mounts (no in-memory compilation per job).
+            "--compile-bytecode",
         ];
 
         if let Some(py_path) = py_path.as_ref() {