diff --git a/shovel/Dockerfile b/shovel/Dockerfile
index 818ea0c..1868f87 100644
--- a/shovel/Dockerfile
+++ b/shovel/Dockerfile
@@ -1,3 +1,4 @@
-FROM indexsupply/shovel:1.6
+# Commit-tagged image (indexsupply/shovel@414382aa, 2026-01-11) — no release tags after 1.6.
+FROM indexsupply/shovel:4143
 COPY config.json .
 CMD shovel -config config.json -l :$PORT