diff --git a/CHANGES.rst b/CHANGES.rst
index 8eb1d9d9e..b36a899f8 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -20,10 +20,11 @@ Release History
    - Fixed
 
 
-0.4.1 (unreleased)
-==================
-
+0.4.1 (May 18, 2018)
+====================
 
+This release fixes problems with the online documentation. Local installs are
+not affected.
 
 
 0.4.0 (May 17, 2018)
diff --git a/nengo_spa/version.py b/nengo_spa/version.py
index e62d47f84..ad51c34f1 100644
--- a/nengo_spa/version.py
+++ b/nengo_spa/version.py
@@ -8,7 +8,7 @@
 
 name = "nengo_spa"
 version_info = (0, 4, 1)  # (major, minor, patch)
-dev = 0
+dev = None
 
 version = "{v}{dev}".format(v=".".join(str(v) for v in version_info),
                             dev="" if dev is None else ".dev{:d}".format(dev))