diff --git a/flake.nix b/flake.nix
index 229981c6e16c3aee754517342d9a4af2012edc87..2d20bb6dd2a064bbbef513ca238f9c6537179fe2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -68,6 +68,7 @@
         buildInputs = with pkgs; [
           android-studio
           kivy-env
+          # https://github.com/kivy/python-for-android/blob/v2020.04.29/doc/source/troubleshooting.rst#errors-related-to-java-version
           openjdk8
         ];
       };