diff --git a/.drone.yml b/.drone.yml
index 5442fe7..70ea161 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -273,7 +273,7 @@ environment:
 
 steps:
   - name: renovate
-    image: renovate/renovate:43.59
+    image: renovate/renovate:42.99
     environment:
       RENOVATE_CONFIG_FILE: "renovate_backend_config.js"
       RENOVATE_TOKEN:
diff --git a/renovate.json b/renovate.json
index 110894d..f134b7b 100644
--- a/renovate.json
+++ b/renovate.json
@@ -5,7 +5,7 @@
   "packageRules": [
     {
       "groupName": "Mix dependencies",
-      "matchCategories": ["elixir"]
+      "matchCategories": "elixir"
     },
     {
       "groupName": "asdf tool versions",