diff --git a/pkgs/development/python-modules/pytest-subprocess/default.nix b/pkgs/development/python-modules/pytest-subprocess/default.nix
index cc890096f796..7dc1bd9d08e9 100644
--- a/pkgs/development/python-modules/pytest-subprocess/default.nix
+++ b/pkgs/development/python-modules/pytest-subprocess/default.nix
@@ -13,15 +13,15 @@
 
 buildPythonPackage rec {
   pname = "pytest-subprocess";
-  version = "1.4.1";
+  version = "1.4.2";
 
   disabled = pythonOlder "3.6";
 
   src = fetchFromGitHub {
     owner = "aklajnert";
     repo = "pytest-subprocess";
-    rev = version;
-    hash = "sha256-xNkOXBCQ4AH/JVmxFzI3VSouA6jkCbUom7AdckfjGiE=";
+    rev = "refs/tags/${version}";
+    hash = "sha256-8Of3/RltijfF5MXtVazGzIqpmRIhreT26kLNjzXLF1k=";
   };
 
   buildInputs = [