diff --git a/runtime/syntax/python3.yaml b/runtime/syntax/python3.yaml
index 5a060bff..a87a2cb9 100644
--- a/runtime/syntax/python3.yaml
+++ b/runtime/syntax/python3.yaml
@@ -1,7 +1,7 @@
 filetype: python
 
 detect:
-    filename: "\\.py(3)?$"
+    filename: "\\.py(3|w)?$"
     header: "^#!.*/(env +)?python(3)?$"
 
 rules: