diff --git a/Dockerfile b/Dockerfile
index 5682043..d4f491a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM python:3.8.11-slim-buster@sha256:9b0d7419e2811710aacee87c40a2c94693e2b6810c3e7e466b8c7fc5bde4cd66
 
 # renovate: datasource=pypi depName=determine-docker-tags versioning=semver
-ENV DETERMINE_DOCKER_TAGS_VERSION 0.1.6
+ENV DETERMINE_DOCKER_TAGS_VERSION 0.1.9
 
 RUN set -ex; \
     \