diff --git a/pkgs/applications/science/molecular-dynamics/gromacs/default.nix b/pkgs/applications/science/molecular-dynamics/gromacs/default.nix
index 80eee27eb2d9..b3a95034ca54 100644
--- a/pkgs/applications/science/molecular-dynamics/gromacs/default.nix
+++ b/pkgs/applications/science/molecular-dynamics/gromacs/default.nix
@@ -7,6 +7,7 @@
 , perl
 , blas
 , lapack
+, llvmPackages
 , mpi
 , cudaPackages
 , plumed
@@ -77,7 +78,7 @@ in stdenv.mkDerivation rec {
     cudaPackages.cuda_cudart
     cudaPackages.libcufft
     cudaPackages.cuda_profiler_api
-  ];
+  ] ++ lib.optional stdenv.isDarwin llvmPackages.openmp;
 
   propagatedBuildInputs = lib.optional enableMpi mpi;
   propagatedUserEnvPkgs = lib.optional enableMpi mpi;