diff --git a/pkgs/by-name/de/deno/package.nix b/pkgs/by-name/de/deno/package.nix
index 8412e4e121ac..3635f4027763 100644
--- a/pkgs/by-name/de/deno/package.nix
+++ b/pkgs/by-name/de/deno/package.nix
@@ -111,5 +111,8 @@ rustPlatform.buildRustPackage rec {
       "x86_64-darwin"
       "aarch64-darwin"
     ];
+    # NOTE: `aligned_alloc` error on darwin SDK < 10.15. Can't do usual overrideSDK with rust toolchain in current implementation.
+    # Should be fixed with darwin SDK refactor and can be revisited.
+    broken = stdenv.isDarwin && stdenv.isx86_64;
   };
 }