diff --git a/.bumpversion.toml b/.bumpversion.toml
index bb361c8..0bfde1d 100644
--- a/.bumpversion.toml
+++ b/.bumpversion.toml
@@ -1,7 +1,7 @@
 [tool.bumpversion]
 commit = true
 tag = true
-current_version = "1.0.0-dev.20"
+current_version = "1.0.0-dev.21"
 parse = "(?P<major>\\d+)\\.(?P<minor>\\d+)\\.(?P<patch>\\d+)(\\-(?P<release>[a-z]+)\\.(?P<build>\\d+))?"
 serialize = [
     "{major}.{minor}.{patch}-{release}.{build}",
diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index e503759..df24e20 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -6,7 +6,7 @@ on:
       - "*"
 
 env:
-  VERSION: 1.0.0-dev.20
+  VERSION: 1.0.0-dev.21
 
 jobs:
   docker:
diff --git a/Dockerfile b/Dockerfile
index d78273a..c6bc3f6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 FROM python:3.10-bookworm
 
 LABEL org.opencontainers.image.created=${BUILD_DATE}
-LABEL org.opencontainers.image.version="1.0.0-dev.20"
+LABEL org.opencontainers.image.version="1.0.0-dev.21"
 LABEL org.opencontainers.image.authors="Nico Reinartz <nico.reinartz@rwth-aachen.de>"
 LABEL org.opencontainers.image.vendor="Nico Reinartz"
 LABEL org.opencontainers.image.title="Trend Detection API and processing service"