diff --git a/renovate.json b/renovate.json
index 4996b5b..54d086c 100644
--- a/renovate.json
+++ b/renovate.json
@@ -2,6 +2,12 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": ["config:base"],
   "packageRules": [
+    {
+      "matchFileNames": ["Dockerfile"],
+      "matchDepNames": ["alpine"],
+      "matchUpdateTypes": ["major", "minor", "patch", "pin", "digest"],
+      "automerge": true
+    },
     {
       "matchUpdateTypes": ["minor", "patch", "pin", "digest"],
       "automerge": true