diff --git a/pkgs/development/python-modules/posix_ipc/default.nix b/pkgs/development/python-modules/posix_ipc/default.nix
index 68e6f743ffc4..39b088f506f7 100644
--- a/pkgs/development/python-modules/posix_ipc/default.nix
+++ b/pkgs/development/python-modules/posix_ipc/default.nix
@@ -1,7 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchPypi
-, isPy3k
+, pythonOlder
 }:
 
 buildPythonPackage rec {
@@ -9,14 +9,16 @@ buildPythonPackage rec {
   version = "1.1.1";
   format = "setuptools";
 
-  disabled = !isPy3k;
+  disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-4kVroM+y7luhQSFFDo2CWzxKFGH8oHYSIKq2bUERy7c=";
+    hash = "sha256-4kVroM+y7luhQSFFDo2CWzxKFGH8oHYSIKq2bUERy7c=";
   };
 
-  pythonImportsCheckHook = [ "posix_ipc" ];
+  pythonImportsCheckHook = [
+    "posix_ipc"
+  ];
 
   meta = with lib; {
     description = "POSIX IPC primitives (semaphores, shared memory and message queues)";