diff --git a/overlay.nix b/overlay.nix
index 3c6ad2979516c4b1eb568c8a10f9c2002c4110b3..76a089c34cf198fd1efb516c3cf8c1434ee75a19 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -297,6 +297,8 @@ final: prev: with pkgs.haskell.lib; {
 
   unicode-data = dontCheck (prev.callCabal2nix "unicode-data" (inputs.unicode-data + /unicode-data) { });
 
+  unicode-collation = doJailbreak (prev.callHackage "unicode-collation" "0.1.3.2" { });
+
   unordered-containers = doJailbreak (prev.callHackage "unordered-containers" "0.2.19.1" { });
 
   vault = doJailbreak (prev.callHackage "vault" "0.3.1.5" { });