diff --git a/pkgs/applications/networking/instant-messengers/mikutter/shell.nix b/pkgs/applications/networking/instant-messengers/mikutter/shell.nix
index efa57175b23..bc83767af32 100644
--- a/pkgs/applications/networking/instant-messengers/mikutter/shell.nix
+++ b/pkgs/applications/networking/instant-messengers/mikutter/shell.nix
@@ -8,6 +8,7 @@ pkgs.stdenv.mkDerivation {
   ];
 
   shellHook = ''
+    export MIKUTTER_CONFROOT="/homeless-shelter"
     truncate --size 0 Gemfile.lock
     bundle lock
     bundle package --path=vendor/bundle --no-install