diff --git a/doc/conf.py b/doc/conf.py
index 5966080b3..844ce42a9 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -52,7 +52,7 @@ copyright = u'2015, Antoine Nguyen'
 # The short X.Y version.
 version = '1.5'
 # The full version, including alpha/beta/rc tags.
-release = '1.5.2'
+release = '1.5.3'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/setup.py b/setup.py
index 3e5e2e195..85946cd83 100644
--- a/setup.py
+++ b/setup.py
@@ -54,7 +54,7 @@ def read(fname):
 
 setup(
     name="modoboa",
-    version='1.5.2',
+    version='1.5.3',
     url='http://modoboa.org/',
     license='MIT',
     description="Mail hosting made simple",