diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 09b6cb1..d20377f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,9 +23,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      # pnpm version is read from the "packageManager" field in package.json.
       - uses: pnpm/action-setup@v4
-        with:
-          version: 9
 
       - uses: actions/setup-node@v4
         with:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ed6aa73..e041db2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,9 +19,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      # pnpm version is read from the "packageManager" field in package.json.
       - uses: pnpm/action-setup@v4
-        with:
-          version: 9.12.0
 
       - uses: actions/setup-node@v4
         with: