diff --git a/flake.nix b/flake.nix
index 8f8943c..9df979e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -101,9 +101,6 @@
         ];
 
         shellHook = ''
-          export CC=clang
-          export CXX=clang++
-          export LD=clang
           export MRUBY_LIB=${mruby}/lib
         '';
       };