diff --git a/.github/workflows/spell-check-differential.yaml b/.github/workflows/spell-check-differential.yaml
deleted file mode 100644
index 1fbf2ff46925c..0000000000000
--- a/.github/workflows/spell-check-differential.yaml
+++ /dev/null
@@ -1,16 +0,0 @@
-name: spell-check-differential
-
-on:
-  pull_request:
-
-jobs:
-  spell-check-differential:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check out repository
-        uses: actions/checkout@v4
-
-      - name: Run spell-check
-        uses: autowarefoundation/autoware-github-actions/spell-check@v1
-        with:
-          cspell-json-url: https://raw.githubusercontent.com/tier4/autoware-spell-check-dict/main/.cspell.json