diff --git a/README.md b/README.md
index 92f69e042d98df1d97dccadb77432fa5eced29c3..251213b6e443d4e16f0f3aeefd75017310c83d47 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,8 @@ dependencies.  To fix that, please run `opam update` followed by
 
 ## Building Instructions
 
-Run `make` to build the full development.
+Run `make -jN` to build the full development, where `N` is the number of your
+CPU cores.
 
 ## Structure