diff --git a/pkgs/by-name/li/libucontext/package.nix b/pkgs/by-name/li/libucontext/package.nix
index 36c010c7218b..1349bde56c0d 100644
--- a/pkgs/by-name/li/libucontext/package.nix
+++ b/pkgs/by-name/li/libucontext/package.nix
@@ -23,6 +23,11 @@ stdenv.mkDerivation (finalAttrs: {
     ninja
   ];
 
+  # Makefile builds the asm files with -Wa,--noexecstack, meson.build does not.
+  # If you do not pass it, you get PT_GNU_STACK=RWE on static consumers of the library.
+  # https://github.com/kaniini/libucontext/issues/83
+  env.NIX_CFLAGS_COMPILE = "-Wa,--noexecstack";
+
   passthru.updateScript = nix-update-script { };
 
   meta = {