diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 5151988c..1487c784 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    ".": "2.4.0"
+    ".": "2.4.1"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 598a3e87..4469866a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.4.1](https://github.com/petercorke/machinevision-toolbox-python/compare/v2.4.0...v2.4.1) (2026-09-30)
+
+
+### Documentation
+
+* add Codacy grade badge to README ([f91ed2c](https://github.com/petercorke/machinevision-toolbox-python/commit/f91ed2c8a74daf8baf01632548d3d3c23fc06293))
+
 ## [2.4.0](https://github.com/petercorke/machinevision-toolbox-python/compare/v2.3.0...v2.4.0) (2026-08-25)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index f8e66ffc..978499fa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "machinevision-toolbox-python"
-version = "2.4.0"
+version = "2.4.1"
 authors = [{ name = "Peter Corke", email = "rvc@petercorke.com" }]
 description = "Object-oriented machine vision for Python."
 readme = "README.md"