diff --git a/pkgs/development/python-modules/cgen/default.nix b/pkgs/development/python-modules/cgen/default.nix
index e0317249fe9f..f6cf985349b9 100644
--- a/pkgs/development/python-modules/cgen/default.nix
+++ b/pkgs/development/python-modules/cgen/default.nix
@@ -8,11 +8,11 @@
 
 buildPythonPackage rec {
   pname = "cgen";
-  version = "2017.1";
+  version = "2019.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "a04525d51ee975d37d590d6d82bf80a46e77f75187cccfd2248a89616a778795";
+    sha256 = "04gxzfjy2f9qsg3scg1sx4q4rhw5p036dyqngxyfsai0wvj5ya6m";
   };
 
   checkInputs = [ pytest ];