diff --git a/renovate.json b/renovate.json
index e5407422f0a166e569a17999f34e5e5f223f79d3..cde128fd5ebbe1bde423c006e2d06baba08ec390 100644
--- a/renovate.json
+++ b/renovate.json
@@ -14,7 +14,7 @@
   },
   "regexManagers": [
   {
-      "fileMatch": ["*.yaml$"],
+      "fileMatch": ["\\.yaml$"],
       "matchStrings": [
         "# renovate:\\n\\s+image: \"?'?(?<depName>[^:\\s]+?):(?<currentValue>[^\"]*?)\"?'?\\s"
       ],