diff --git a/.github/workflows/autofix.yml b/.github/workflows/autofix.yml
index fda2f9d..398f574 100644
--- a/.github/workflows/autofix.yml
+++ b/.github/workflows/autofix.yml
@@ -25,7 +25,7 @@ jobs:
           node-version: lts/*
 
       - name: Install
-        run: pnpm install
+        run: pnpm install --frozen-lockfile
 
       - name: Lint
         run: pnpm run lint --fix
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ad74e52..267ccb1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
           node-version: lts/*
 
       - name: Install
-        run: pnpm install
+        run: pnpm install --frozen-lockfile
 
       - name: Typecheck
         run: pnpm run typecheck