diff --git a/renovate.json b/renovate.json
index a1a0bd0..e6a1d25 100644
--- a/renovate.json
+++ b/renovate.json
@@ -1,4 +1,5 @@
 {
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "assignees": [
     "samuel-p"
   ],
@@ -15,7 +16,7 @@
       ],
       "matchStrings": [
         "\\s+ENV\\s*CADVISOR_VERSION=\"(?<currentValue>.*?)\"\\s+",
-        "cadvisor:(?<currentValue>v\\S+)"
+        "cadvisor:(?<currentValue>[v.0-9]+)"
       ],
       "versioningTemplate": "loose",
       "depNameTemplate": "google/cadvisor",