diff --git a/pkgs/development/python-modules/marionette-harness/mozrunner.nix b/pkgs/development/python-modules/marionette-harness/mozrunner.nix
index ac8631362fb..ba0fa476906 100644
--- a/pkgs/development/python-modules/marionette-harness/mozrunner.nix
+++ b/pkgs/development/python-modules/marionette-harness/mozrunner.nix
@@ -12,11 +12,11 @@
 
 buildPythonPackage rec {
   pname = "mozrunner";
-  version = "7.0.2";
+  version = "7.6.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "8034898a36fece171b52e25792f64011e761e5aa694cd67fb6a19c12cb3fa978";
+    sha256 = "0ae84147f0fd784daa32c1d74f94b6e384967831aaf0c635bb3d9d0af3c4b112";
   };
 
   propagatedBuildInputs = [ mozdevice mozfile mozinfo mozlog mozprocess