diff --git a/flake.nix b/flake.nix
index 75addfe..a2ea7b1 100644
--- a/flake.nix
+++ b/flake.nix
@@ -21,6 +21,7 @@
             buildInputs = with pkgs; [
               cargo
               clippy
+              evcxr
               rust-analyzer
               rustc
               rustfmt