diff --git a/overlays/neovim.nix b/overlays/neovim.nix
index 0f71f9f..9ba220d 100644
--- a/overlays/neovim.nix
+++ b/overlays/neovim.nix
@@ -4,6 +4,9 @@
 }:
 neovim-unwrapped.overrideAttrs (old: rec {
   version = "0.12.5";
+
+  # Functional tests fail in the darwin sandbox (--listen socket denied).
+  doCheck = false;
   patches = builtins.filter (
     patch: !pkgs.lib.hasInfix "-CVE-" (baseNameOf (toString patch))
   ) old.patches;