diff --git a/docs/conf.py b/docs/conf.py
index 6bc88f8..0f3c92a 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -22,7 +22,7 @@
 # -- Project information -----------------------------------------------------
 
 project = "karton"
-copyright = "2021, CERT Polska"
+copyright = "2023, CERT Polska"
 author = "CERT Polska"
 
 # The short X.Y version
diff --git a/karton/core/__version__.py b/karton/core/__version__.py
index 6c235c5..f575288 100644
--- a/karton/core/__version__.py
+++ b/karton/core/__version__.py
@@ -1 +1 @@
-__version__ = "5.2.0"
+__version__ = "5.3.0"