diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 4d5e1c1..4e57952 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -21,7 +21,6 @@ jobs:
           - windows-2019
     steps:
       - uses: actions/checkout@v1
-      - uses: mstksg/setup-stack@v2
       - name: Build
         run: make
       - name: Prepare Artifact
diff --git a/.github/workflows/notice.yaml b/.github/workflows/notice.yaml
index 2b21f31..ec0093d 100644
--- a/.github/workflows/notice.yaml
+++ b/.github/workflows/notice.yaml
@@ -14,7 +14,6 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v1
-      - uses: mstksg/setup-stack@v2
       - name: Regenerate NOTICE
         run: ./notice.sh > NOTICE
       - name: Validate NOTICE