diff --git a/gadget/4.0/README.md b/gadget/4.0/README.md
index 8c2df65844fabf70fc21c1f90893c6c531770aa9..7a72d2b7e757f38b04e9ec5e99cd1e086701887e 100644
--- a/gadget/4.0/README.md
+++ b/gadget/4.0/README.md
@@ -17,22 +17,18 @@ Complete Build instructions can be found at
 It requires a compiler with full C++11 support, MPI (e.g., MPICH, OpenMPI, IntelMPI), FFTW3, GSL, and HDF5.
 
 ### Download the source code
-Latest Release can be downloaded from
-[https://gitlab.mpcdf.mpg.de/vrs/gadget4](https://gitlab.mpcdf.mpg.de/vrs/gadget4)
 
-or get a cloned repository of the code by using 
+Latest Release can be downloaded from [https://gitlab.mpcdf.mpg.de/vrs/gadget4](https://gitlab.mpcdf.mpg.de/vrs/gadget4)
 
-git clone http://gitlab.mpcdf.mpg.de/vrs/gadget4
+or get a cloned repository of the code by using 
 
-[https://manual.gromacs.org/documentation/#latest-releases](https://manual.gromacs.org/documentation/#latest-releases)
 ```
-wget https://ftp.gromacs.org/gromacs/gromacs-VERSION.tar.gz
-tar -zxf gromacs-VERSION.tar.gz
-cd gromacs-VERSION
-mkdir build
-cd build
+git clone http://gitlab.mpcdf.mpg.de/vrs/gadget4
 ```
 
+Source code used in the benchmarks (version of June 21, 2021) [./gadget/4.0/gadget4.tar.gz](./gadget/4.0/gadget4.tar.gz)
+
+
 ### Build the Executable
 
 Environment software need in the system: MPI (e.g., MPICH, OpenMPI, IntelMPI), FFTW3, GSL, HDF5