diff --git a/CHANGELOG.md b/CHANGELOG.md
index 237fb7fd..4b06d97d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,17 @@ for the source-code artifacts of each version.
 
 ## Pynguin 0.12.0
 
+- Generate more reasonable variable names in tests.
+  Before this release, Pynguin only generated variables named `var0`, `var1`, etc.
+  A simple heuristics now attempts to generate more reasonable names depending on the
+  type of the variable, such as `int_0`, `bool_1`, or `str_2`.
+  We also adjusted the documentation to match this change.
+- We updated all provided PyCharm run configurations the use the more sophisticated
+  queue example instead of the simple example module to see an improved output.
+- Prevent a potential regression when updating the dependencies to version 0.0.17 of the
+  [simple-parsing](https://pypi.org/project/simple-parsing) library for CLI argument
+  parsing, which changed its API.
+
 ## Pynguin 0.11.0
 
 - Fix a control-dependency bug in DynaMOSA.  Loops in the control-dependence graph 
diff --git a/docker/Dockerfile b/docker/Dockerfile
index f679d568..66c737dd 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -36,7 +36,7 @@ FROM python:3.9.7-slim-bullseye AS execute
 
 # Set environment variables
 # Set the Pynguin version
-ENV PYNGUIN_VERSION "0.12.0.dev0"
+ENV PYNGUIN_VERSION "0.12.0"
 # 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/pynguin/__init__.py b/pynguin/__init__.py
index d80584ef..e160afaf 100644
--- a/pynguin/__init__.py
+++ b/pynguin/__init__.py
@@ -17,7 +17,7 @@
 StoppingCondition = config.StoppingCondition
 TypeInferenceStrategy = config.TypeInferenceStrategy
 
-__version__ = "0.12.0.dev"
+__version__ = "0.12.0"
 __all__ = [
     "set_configuration",
     "run_pynguin",
diff --git a/pyproject.toml b/pyproject.toml
index 8579d0db..aab99167 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@
 
 [tool.poetry]
 name = "pynguin"
-version = "0.12.0.dev"
+version = "0.12.0"
 description = "Pynguin is a tool for automated unit test generation for Python"
 authors = ["Stephan Lukasczyk <stephan@lukasczyk.me>"]
 license = "LGPL-3.0-or-later"