diff --git a/shell.nix b/shell.nix
index 870a039..1d073be 100644
--- a/shell.nix
+++ b/shell.nix
@@ -5,6 +5,7 @@ pkgs.mkShell {
     cargo
     rustc
     rustfmt
+    gdb
   ];
 
   RUST_BACKTRACE = 1;