diff --git a/action.yml b/action.yml
index 64d6d494..74b0e375 100644
--- a/action.yml
+++ b/action.yml
@@ -56,6 +56,6 @@ outputs:
     description: 'Email address associated with the GPG key'
 
 runs:
-  using: 'node12'
+  using: 'node16'
   main: 'dist/index.js'
   post: 'dist/index.js'
diff --git a/dev.Dockerfile b/dev.Dockerfile
index ab57f49b..8482bb70 100644
--- a/dev.Dockerfile
+++ b/dev.Dockerfile
@@ -1,6 +1,6 @@
-# syntax=docker/dockerfile:1.4
+# syntax=docker/dockerfile:1
 
-ARG NODE_VERSION=12
+ARG NODE_VERSION=16
 
 FROM node:${NODE_VERSION}-alpine AS base
 RUN apk add --no-cache cpio findutils git