diff --git a/overlay.nix b/overlay.nix
index fcd7894d0edc99843aa3b82cf1970b51cf6e0673..7521d4d1f5121f404329e99fd75f76b6301b285a 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -321,6 +321,8 @@ final: prev: with pkgs.haskell.lib; {
 
   these = doJailbreak (prev.callHackage "these" "1.1.1.1" { });
 
+  th-extras = doJailbreak (prev.callHackage "th-extras" "0.0.0.6" { });
+
   th-lift-instances = prev.callHackage "th-lift-instances" "0.1.20" { };
 
   tidal = doJailbreak (prev.callHackage "tidal" "1.8.1" { });