diff --git a/flake.nix b/flake.nix
index ae48a3176..645cf83f9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -94,8 +94,6 @@
         program = "${self.packages.${system}.jujutsu}/bin/jj";
       };
       checks.jujutsu = self.packages.${system}.jujutsu.overrideAttrs ({ ... }: {
-        cargoBuildType = "debug";
-        cargoCheckType = "debug";
         preCheck = ''
           export RUST_BACKTRACE=1
         '';