diff --git a/README.md b/README.md
index 7c17dfa..71102df 100644
--- a/README.md
+++ b/README.md
@@ -32,13 +32,13 @@ We recommend using the provided Docker container.
 
 A pre-build version is available at [docker hub](https://hub.docker.com/repository/docker/ghga/mass):
 ```bash
-docker pull ghga/mass:0.3.3
+docker pull ghga/mass:0.3.4
 ```
 
 Or you can build the container yourself from the [`./Dockerfile`](./Dockerfile):
 ```bash
 # Execute in the repo's root dir:
-docker build -t ghga/mass:0.3.3 .
+docker build -t ghga/mass:0.3.4 .
 ```
 
 For production-ready deployment, we recommend using Kubernetes, however,
@@ -46,7 +46,7 @@ for simple use cases, you could execute the service using docker
 on a single server:
 ```bash
 # The entrypoint is preconfigured:
-docker run -p 8080:8080 ghga/mass:0.3.3 --help
+docker run -p 8080:8080 ghga/mass:0.3.4 --help
 ```
 
 If you prefer not to use containers, you may install the service from source:
diff --git a/pyproject.toml b/pyproject.toml
index 1b954f2..ab159b1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "mass"
-version = "0.3.3"
+version = "0.3.4"
 description = "Metadata Artifact Search Service  - A service for searching metadata artifacts and filtering results."
 readme = "README.md"
 authors = [