diff --git a/overlay.nix b/overlay.nix
index 618cbf997fd611ce339de02400c57f17da79028d..cb3ecb917d3c39ddfabb5d2a5c63dc53e226da9c 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -33,7 +33,7 @@ final: prev: with pkgs.haskell.lib; {
 
   basement = prev.callHackage "basement" "0.0.15" { };
 
-  base64 = doJailbreak (prev.callHackage "base64" "0.4.2.4" { });
+  base64 = dontCheck (doJailbreak (prev.callHackage "base64" "0.4.2.4" { }));
 
   base-compat = prev.callHackage "base-compat" "0.12.2" { };