diff --git a/src/biotite/__init__.py b/src/biotite/__init__.py
index 12ce7b018..ab28d0a06 100644
--- a/src/biotite/__init__.py
+++ b/src/biotite/__init__.py
@@ -9,11 +9,11 @@
 modules.
 """
 
-__version__ = "0.39.0"
+__version__ = "0.40.0"
 __name__ = "biotite"
 __author__ = "Patrick Kunzmann"
 
 from .file import *
 from .temp import *
-from .copyable import * 
-from .visualize import * 
+from .copyable import *
+from .visualize import *