1 files changed, 1 insertions, 0 deletions

diff --git a/README.md b/README.md
index 9c6cbdb..77425bc 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@ README.md
 
 Install/Compile
 ---------------
+needs `libgsl-dev'
 (1) mass_profile
 $ cd mass_profile
 $ make clean