diff --git a/Requirements.md b/Requirements.md
index d4e25b7..921253b 100644
--- a/Requirements.md
+++ b/Requirements.md
@@ -4,9 +4,10 @@
 * Fortran compiler : gfortran or ifort
 * Lapack library : liblapack.so or MKL
 * GNU make : http://www.gnu.org/software/make
-* Ocaml with Opam : https://opam.ocaml.org/doc/Install.html
+* OCaml with Opam : https://opam.ocaml.org/doc/Install.html
 * m4 : http://www.gnu.org/software/m4/
 * curl : http://curl.haxx.se/
 * EMSL_Basis_Set_Exchange_Local : https://github.com/TApplencourt/EMSL_Basis_Set_Exchange_Local
 * Zlib : http://zlib.net
-* GNU patch : http://savannah.gnu.org/projects/patch
\ No newline at end of file
+* GNU patch : http://savannah.gnu.org/projects/patch
+* ZeroMQ : http://zeromq.org/
\ No newline at end of file