diff --git a/ontopy/__init__.py b/ontopy/__init__.py
index 358ef825f..0cd088b39 100644
--- a/ontopy/__init__.py
+++ b/ontopy/__init__.py
@@ -2,7 +2,7 @@
 # pylint: disable=wrong-import-position,wrong-import-order
 import sys
 
-__version__ = "0.5.1"
+__version__ = "0.5.0"
 
 # Ensure correct Python version
 if sys.version_info < (3, 7):