diff --git a/src/oemof/solph/__init__.py b/src/oemof/solph/__init__.py
index ebdb22c2c..7f58c9578 100644
--- a/src/oemof/solph/__init__.py
+++ b/src/oemof/solph/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.5.4"
+__version__ = "0.5.5"
 
 from . import buses
 from . import components