diff --git a/makefu/2configs/tools/dev.nix b/makefu/2configs/tools/dev.nix
index 04a65df26..b652241bd 100644
--- a/makefu/2configs/tools/dev.nix
+++ b/makefu/2configs/tools/dev.nix
@@ -21,6 +21,9 @@
     gen-oath-safe
     cdrtools
     stockholm
+    # nix related
+    nix-repl
+    nix-index
     # git-related
     tig
   ];