diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 28a72e72..4cde5d97 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,6 +12,9 @@ concurrency:
   group: ci-${{ github.head_ref || github.ref }}
   cancel-in-progress: true
 
+env:
+  SKIP_YARN_COREPACK_CHECK: 0
+
 jobs:
   lint:
     name: Lint
@@ -20,8 +23,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: pnpm/action-setup@v4
-        with:
-          version: 9
       - uses: actions/setup-node@v4
         with:
           node-version: 18
@@ -37,8 +38,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: pnpm/action-setup@v4
-        with:
-          version: 9
       - name: Install Node
         uses: actions/setup-node@v4
         with:
@@ -61,8 +60,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: pnpm/action-setup@v4
-        with:
-          version: 9
       - uses: actions/setup-node@v4
         with:
           node-version: 18
@@ -148,8 +145,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: pnpm/action-setup@v4
-        with:
-          version: 9
       - uses: actions/setup-node@v4
         with:
           node-version: 18
@@ -183,8 +178,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: pnpm/action-setup@v4
-        with:
-          version: 9
       - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
@@ -215,8 +208,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: pnpm/action-setup@v4
-        with:
-          version: 9
       - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
@@ -242,8 +233,6 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: pnpm/action-setup@v4
-        with:
-          version: 9
       - uses: actions/setup-node@v4
         with:
           node-version: 18
diff --git a/package.json b/package.json
index 168798df..a58e2a3a 100644
--- a/package.json
+++ b/package.json
@@ -66,6 +66,7 @@
     "sinon": "^19.0.2",
     "tmp-sync": "^1.1.0"
   },
+  "packageManager": "pnpm@9.15.0",
   "engines": {
     "node": ">= 18"
   },