diff --git a/README.md b/README.md
index a17b669..73feb35 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,7 @@ Now that your Haskell environment is set up, you need to install the dependencie
 * happy
 * libpq-dev
 * postgresql
+* libfftw3-dev
 
 Install all of them through your package management system.