diff --git a/pkgs/development/python-modules/python-openems/default.nix b/pkgs/development/python-modules/python-openems/default.nix
index 7a186276dfc7..c1480c9f2d3a 100644
--- a/pkgs/development/python-modules/python-openems/default.nix
+++ b/pkgs/development/python-modules/python-openems/default.nix
@@ -12,14 +12,9 @@
 
 buildPythonPackage rec {
   pname = "python-openems";
-  version = "unstable-2020-02-15";
+  version = openems.version;
 
-  src = fetchFromGitHub {
-    owner = "thliebig";
-    repo = "openEMS";
-    rev = "ba793ac84e2f78f254d6d690bb5a4c626326bbfd";
-    sha256 = "1dca6b6ccy771irxzsj075zvpa3dlzv4mjb8xyg9d889dqlgyl45";
-  };
+  src = openems.src;
 
   sourceRoot = "${src.name}/python";