diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index 3c291f0..2baf048 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -48,7 +48,7 @@ jobs:
       uses: actions/setup-node@v1
       with:
         node-version: ${{ matrix.node-version }}
-    - run: yarn
+    - run: yarn --frozen-lockfile
     - run: yarn build
   release:
     name: Release
diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..48082f7
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+12
diff --git a/.yvmrc b/.yvmrc
new file mode 100644
index 0000000..57807d6
--- /dev/null
+++ b/.yvmrc
@@ -0,0 +1 @@
+1.22.0