diff --git a/pkgs/development/python-modules/runway-python/default.nix b/pkgs/development/python-modules/runway-python/default.nix
index 07e39e72bc02..958b1ee45b33 100644
--- a/pkgs/development/python-modules/runway-python/default.nix
+++ b/pkgs/development/python-modules/runway-python/default.nix
@@ -13,11 +13,11 @@
 
 buildPythonPackage rec {
   pname = "runway-python";
-  version = "0.3.2";
+  version = "0.4.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "ef15c0df60cfe7ea26b070bbe2ba522d67d247b157c20f3f191fe545c17d0b85";
+    sha256 = "cd23550211aa8542d9c06516e25c32de3963fff50d0793d94def271a4e2b4514";
   };
 
   propagatedBuildInputs = [ flask flask-cors numpy pillow gevent wget six colorcet ];