diff --git a/pde/version.py b/pde/version.py
index c14fcaea..c05566b7 100644
--- a/pde/version.py
+++ b/pde/version.py
@@ -4,4 +4,4 @@
 .. codeauthor:: David Zwicker <david.zwicker@ds.mpg.de>
 """
 
-__version__ = "0.20.0"
+__version__ = "0.21.0"