diff --git a/doc/conf.py b/doc/conf.py
index 997000a8..f4788177 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -22,7 +22,7 @@
 author = 'Bach, P., Chernozhukov, V., Klaassen, S., Kurz, M. S., and Spindler, M.'
 
 # The full version, including alpha/beta/rc tags
-release = '0.9.dev0'
+release = '0.9.0'
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/setup.py b/setup.py
index 894fff48..d519cf3b 100644
--- a/setup.py
+++ b/setup.py
@@ -11,7 +11,7 @@
 
 setup(
     name='DoubleML',
-    version='0.9.dev0',
+    version='0.9.0',
     author='Bach, P., Chernozhukov, V., Klaassen, S., Kurz, M. S., and Spindler, M.',
     maintainer='Sven Klaassen',
     maintainer_email='sven.klaassen@uni-hamburg.de',