diff --git a/pkgs/development/python-modules/marionette-harness/marionette_driver.nix b/pkgs/development/python-modules/marionette-harness/marionette_driver.nix
index 4315b08e016f..49f25e96bdca 100644
--- a/pkgs/development/python-modules/marionette-harness/marionette_driver.nix
+++ b/pkgs/development/python-modules/marionette-harness/marionette_driver.nix
@@ -9,13 +9,13 @@
 
 buildPythonPackage rec {
   pname = "marionette_driver";
-  version = "2.5.0";
+  version = "2.7.0";
   name = "${pname}-${version}";
   disabled = isPy3k;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0axhdin9ys3i9lnwqqqw87wap9000bk6cdgrzpd2gqricc7l3v65";
+    sha256 = "15c77ba548847dc05ce1b663a22c3324623f217dce5a859c3aaced31fd16707b";
   };
 
   propagatedBuildInputs = [ mozversion mozrunner ];