diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index bba0c295..85b270e4 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.20.3"
+  ".": "0.20.4"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b9964816..f63cef43 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+## [0.20.4](https://github.com/rickstaa/stable-gym/compare/v0.20.3...v0.20.4) (2023-08-31)
+
+
+### Documentation
+
+* add ros-gazebo-gym positive reward comment ([#315](https://github.com/rickstaa/stable-gym/issues/315)) ([a29a1c9](https://github.com/rickstaa/stable-gym/commit/a29a1c9636b775ca8eb735691fdd233fbe52bb99))
+
 ## [0.20.3](https://github.com/rickstaa/stable-gym/compare/v0.20.2...v0.20.3) (2023-08-31)
 
 
diff --git a/package.json b/package.json
index 6de8a635..0f8c1136 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "stable-gym",
-  "version": "0.20.3",
+  "version": "0.20.4",
   "description": "Contains several gymnasium environments with cost functions compatible with (stable) RL agents (i.e. positive definite).",
   "keywords": [
     "reinforcement-learning",
diff --git a/stable_gym/version.py b/stable_gym/version.py
index 3964b996..93c452d5 100644
--- a/stable_gym/version.py
+++ b/stable_gym/version.py
@@ -1,3 +1,3 @@
 # Stores the package version number so that it can be accessed from other modules.
-__version__ = "0.20.3"
+__version__ = "0.20.4"
 __version_tuple__ = __version__.split(".")