diff --git a/CHANGELOG.md b/CHANGELOG.md
index 722564e..7f8c28d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,2 +1,4 @@
+- BREAKING
+  - Drop Python 3.5 support
 - ENHANCEMENT
-  - update package dependencies
+  - Switch to `org.opencontainers` docker image labels
diff --git a/docker/Dockerfile b/docker/Dockerfile
index cfe1538..5820bee 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,10 +1,11 @@
 FROM python:3.9-alpine
 
-LABEL maintainer="Robert Kaussow <mail@thegeeklab.de>" \
-    org.label-schema.name="docker-tidy" \
-    org.label-schema.vcs-url="https://github.com/thegeeklab/docker-tidy" \
-    org.label-schema.vendor="Robert Kaussow" \
-    org.label-schema.schema-version="1.0"
+LABEL maintainer="Robert Kaussow <mail@thegeeklab.de>"
+LABEL org.opencontainers.image.authors="Robert Kaussow <mail@thegeeklab.de>"
+LABEL org.opencontainers.image.title="docker-tidy"
+LABEL org.opencontainers.image.url="https://docker-tidy.geekdocs.de/"
+LABEL org.opencontainers.image.source="https://github.com/thegeeklab/docker-tidy"
+LABEL org.opencontainers.image.documentation="https://docker-tidy.geekdocs.de/"
 
 ENV PY_COLORS=1
 ENV TZ=UTC