diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index ac8dc25e8235..3799e9b09874 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -9806,6 +9806,9 @@ in {
     gdal = self.gdal;
   };
 
+  # TODO: Django 1.10 will be maintained until the end of the year. Therefore,
+  # it will be dropped before 17.09.
+  # https://github.com/NixOS/nixpkgs/issues/25375#issuecomment-298522597
   django_1_10 = callPackage ../development/python-modules/django/1_10.nix {
     gdal = self.gdal;
   };