diff --git a/to-edn.nix b/to-edn.nix
index 0fa5fcb..bab5085 100644
--- a/to-edn.nix
+++ b/to-edn.nix
@@ -2,8 +2,8 @@
 
 with lib;
 let
-  isSymbol = str: isNull (match "^'.+" str);
-  stripQuote = head (match "^'(.+)");
+  isSymbol = str: isNull (builtins.match "^'.+" str);
+  stripQuote = head (builtins.match "^'(.+)");
   parseStr = str: if (isSymbol str) then (stripQuote str) else ''"${str}"'';
 
   join-str = concatStringsSep " ";