diff --git a/.changeset/tough-forks-behave.md b/.changeset/tough-forks-behave.md
new file mode 100644
index 0000000..0982e77
--- /dev/null
+++ b/.changeset/tough-forks-behave.md
@@ -0,0 +1,5 @@
+---
+"zod-to-openai-tool": patch
+---
+
+Use pnpm v9
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 770b8a7..38a854e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: pnpm/action-setup@v2
         with:
-          version: 8
+          version: 9
 
       - name: Setup Node.js 18.x
         uses: actions/setup-node@v3
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index f614cca..cb974e6 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -22,7 +22,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: pnpm/action-setup@v2
         with:
-          version: 8
+          version: 9
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with: