diff --git a/README.md b/README.md
index e7a6db9..d7a230b 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,7 @@ add the following to your `fpm.toml` file:
 gcc>=10
 gfortran>=10
 fpm>=0.7
+stdlib>=0.5
 fypp>=3.0
 ```