diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 784c8750..2a234253 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ['3.10']
-        poetry-version: [1.4.2]
+        poetry-version: [1.5.1]
         os: [ubuntu-latest, macos-latest]
     runs-on: ${{ matrix.os }}
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 89122cad..17251402 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,11 @@ for the source-code artifacts of each version.
 
 ## Unreleased
 
+## Pynguin 0.34.0
+
+- Activate a larger selection of checkers for [ruff](https://github.com/astral-sh/ruff)
+- Implement various stopping conditions
+
 ## Pynguin 0.33.0
 
 - Fix an issue with type-information retrieval (see GitHub issue #35)
diff --git a/docker/Dockerfile b/docker/Dockerfile
index d507b9eb..53e593e9 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -11,9 +11,9 @@
 ###############################################################################
 
 # Build stage for Pynguin
-FROM python:3.10.11-slim-bullseye AS build
+FROM python:3.10.12-slim-bullseye AS build
 MAINTAINER Stephan Lukasczyk <stephan@lukasczyk.me>
-ENV POETRY_VERSION "1.4.2"
+ENV POETRY_VERSION "1.5.1"
 
 WORKDIR /pynguin-build
 
@@ -37,11 +37,11 @@ RUN pip install poetry==$POETRY_VERSION \
 
 
 # Execution stage for Pynguin
-FROM python:3.10.11-slim-bullseye AS execute
+FROM python:3.10.12-slim-bullseye AS execute
 
 # Set environment variables
 # Set the Pynguin version
-ENV PYNGUIN_VERSION "0.34.0.dev0"
+ENV PYNGUIN_VERSION "0.34.0
 # Pynguin requires to set the variable to show it that the user is aware that running
 # Pynguin executes third-party code, which could cause arbitrary harm to the system.
 # By setting the variable, the user acknowledges that they are aware of this.  In the
diff --git a/pyproject.toml b/pyproject.toml
index f11fa092..bacc7e44 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@
 
 [tool.poetry]
 name = "pynguin"
-version = "0.34.0.dev"
+version = "0.34.0"
 description = "Pynguin is a tool for automated unit test generation for Python"
 authors = ["Stephan Lukasczyk <stephan@pynguin.eu>"]
 license = "MIT"
diff --git a/src/pynguin/__version__.py b/src/pynguin/__version__.py
index 6f9bc985..aec05e0b 100644
--- a/src/pynguin/__version__.py
+++ b/src/pynguin/__version__.py
@@ -5,4 +5,4 @@
 #  SPDX-License-Identifier: MIT
 #
 """Specifies the version of Pynguin."""
-__version__ = "0.34.0.dev"
+__version__ = "0.34.0"