diff --git a/.github/workflows/diff_shades.yml b/.github/workflows/diff_shades.yml
index b6a9b33..a8a443e 100644
--- a/.github/workflows/diff_shades.yml
+++ b/.github/workflows/diff_shades.yml
@@ -6,7 +6,7 @@ on:
     paths-ignore: ["docs/**", "tests/**", "*.md"]
 
   pull_request:
-    path-ignore: ["docs/**", "tests/**", "*.md"]
+    paths-ignore: ["docs/**", "tests/**", "*.md"]
 
   workflow_dispatch:
     inputs: