diff --git a/.github/renovate.json5 b/.github/renovate.json5
index a2634bf2071..68d2bf478ce 100644
--- a/.github/renovate.json5
+++ b/.github/renovate.json5
@@ -154,7 +154,7 @@
     //
     {
       "matchDatasources": ["docker"],
-      "versioning": "regex:^v\d+\.(\d*)?[02468]+\.\d+$",
+      "versioning": "regex:^v\\d+\\.(\\d*)?[02468]+\\.\\d+$",
       "matchPackageNames": ["tailscale/tailscale"],
     },
     {