diff --git a/renovate.json b/renovate.json
index 11bee20..caa3511 100644
--- a/renovate.json
+++ b/renovate.json
@@ -13,7 +13,7 @@
         "^\\.ref$"
       ],
       "matchStrings": [
-        "(?<currentValue>)(?<currentDigest>.*)"
+        "^(?<currentValue>)(?<currentDigest>.+)$"
       ],
       "depNameTemplate": "https://github.com/pixelfed/pixelfed.git",
       "versioningTemplate": "git",