diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 05c6e97..9694718 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.4.0.dev
+current_version = 0.4.0
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\.(?P<release>[a-z0-9]+))?
 tag_name = {new_version}
 allow_dirty = True
diff --git a/ltiauthenticator/__init__.py b/ltiauthenticator/__init__.py
index 0f2b8d3..324802e 100644
--- a/ltiauthenticator/__init__.py
+++ b/ltiauthenticator/__init__.py
@@ -10,7 +10,7 @@
 from oauthlib.oauth1.rfc5849 import signature
 from collections import OrderedDict
 
-__version__ = '0.4.0.dev'
+__version__ = '0.4.0'
 
 class LTILaunchValidator:
     # Record time when process starts, so we can reject requests made
diff --git a/setup.py b/setup.py
index 68f5f35..c7642f1 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name='jupyterhub-ltiauthenticator',
-    version='0.4.0.dev',
+    version='0.4.0',
     description='JupyterHub authenticator implementing LTI v1',
     url='https://github.com/yuvipanda/jupyterhub-ltiauthenticator',
     author='Yuvi Panda',