diff --git a/action.yml b/action.yml
index 131fe23..ee92cec 100644
--- a/action.yml
+++ b/action.yml
@@ -67,10 +67,18 @@ inputs:
 runs:
   using: composite
   steps:
+    - name: Read required Node.js version from the action's .nvmrc
+      id: node-version
+      shell: bash
+      # `actions/setup-node`'s `node-version-file` input is resolved relative to `$GITHUB_WORKSPACE`,
+      # so an absolute path from `github.action_path` gets concatenated with the workspace prefix and
+      # fails to resolve. Read the value here and pass it as a literal `node-version` instead.
+      run: echo "version=$(cat "${GITHUB_ACTION_PATH}/.nvmrc")" >> "$GITHUB_OUTPUT"
+
     - name: set up Node.js
       uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
       with:
-        node-version-file: ${{ github.action_path }}/.nvmrc
+        node-version: ${{ steps.node-version.outputs.version }}
 
     - name: set up pnpm
       uses: pnpm/action-setup@8912a9102ac27614460f54aedde9e1e7f9aec20d # v6.0.5