diff --git a/data/Dockerfiles/dovecot/Dockerfile b/data/Dockerfiles/dovecot/Dockerfile
index b3a83974..1d8e1e5b 100644
--- a/data/Dockerfiles/dovecot/Dockerfile
+++ b/data/Dockerfiles/dovecot/Dockerfile
@@ -2,6 +2,7 @@ FROM debian:bullseye-slim
 LABEL maintainer "Andre Peters <andre.peters@servercow.de>"
 
 ARG DEBIAN_FRONTEND=noninteractive
+# renovate: datasource=github-tags depName=dovecot/core versioning=semver-coerced
 ARG DOVECOT=2.3.20
 # renovate: datasource=github-releases depName=tianon/gosu versioning=semver-coerced
 ARG GOSU_VERSION=1.16