diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4185eb9..ee9e0f9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: jdx/mise-action@v4
+      - uses: jdx/mise-action@v4.2.3
       - run: pnpm install --frozen-lockfile
       - run: pnpm run format:check
       - run: pnpm run lint
@@ -51,7 +51,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           fetch-depth: 0 # bundle.js reads git tags
-      - uses: jdx/mise-action@v4
+      - uses: jdx/mise-action@v4.2.3
       - uses: actions/setup-node@v6
         with:
           node-version: "22"
@@ -132,7 +132,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           fetch-depth: 0
-      - uses: jdx/mise-action@v4
+      - uses: jdx/mise-action@v4.2.3
       - uses: actions/setup-node@v6
         with:
           node-version: "22"