diff --git a/.github/workflows/merge-to-master.yml b/.github/workflows/merge-to-master.yml
index 9de6a2a..759ab13 100644
--- a/.github/workflows/merge-to-master.yml
+++ b/.github/workflows/merge-to-master.yml
@@ -10,7 +10,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [14.x]
+        node-version: [12.16.3]
 
     steps:
       - name: Get branch name (merge)
diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index 6ae8114..7fa2347 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [12, 14, 16, 18, 20]
+        node: [12.16.3]
     name: Node ${{ matrix.node }}
     steps:
       - name: 'Checkout latest code'