diff --git a/pkgs/development/python-modules/mkdocs/default.nix b/pkgs/development/python-modules/mkdocs/default.nix
index 81c911c0e8fa..e863c6e7a3c0 100644
--- a/pkgs/development/python-modules/mkdocs/default.nix
+++ b/pkgs/development/python-modules/mkdocs/default.nix
@@ -24,16 +24,24 @@
 
 buildPythonPackage rec {
   pname = "mkdocs";
-  version = "1.2.1";
+  version = "1.2.3";
   disabled = pythonOlder "3.6";
 
   src = fetchFromGitHub {
     owner = pname;
     repo = pname;
     rev = version;
-    sha256 = "sha256-JF3Zz1ObxeKsIF0pa8duJxqjLgMvmWsWMApHT43Z+EY=";
+    sha256 = "sha256-LBw2ftGyeNvARQ8xiYUho8BiQh+aIEqROP51gKvNxEo=";
   };
 
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/mkdocs/mkdocs/commit/c93fc91e4dc0ef33e2ea418aaa32b0584a8d354a.patch";
+      sha256 = "sha256-7uLIuQOt6KU/+iS9cwhXkWPAHzZkQdMyNBxSMut5WK4=";
+      excludes = [ "tox.ini" ];
+    })
+  ];
+
   propagatedBuildInputs = [
     click
     jinja2