diff --git a/pkgs/by-name/s2/s2n-tls/package.nix b/pkgs/by-name/s2/s2n-tls/package.nix
index 259446f94053..712e3d6c424a 100644
--- a/pkgs/by-name/s2/s2n-tls/package.nix
+++ b/pkgs/by-name/s2/s2n-tls/package.nix
@@ -27,6 +27,8 @@ stdenv.mkDerivation (finalAttrs: {
 
   buildInputs = [ openssl ]; # s2n-config has find_dependency(LibCrypto).
 
+  strictDeps = true;
+
   cmakeFlags = [
     "-DBUILD_SHARED_LIBS=ON"
     "-DUNSAFE_TREAT_WARNINGS_AS_ERRORS=OFF" # disable -Werror
@@ -50,6 +52,8 @@ stdenv.mkDerivation (finalAttrs: {
     inherit nix;
   };
 
+  __structuredAttrs = true;
+
   meta = {
     description = "C99 implementation of the TLS/SSL protocols";
     homepage = "https://github.com/aws/s2n-tls";