diff --git a/README.md b/README.md
index f589f68..1e8ef63 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,7 @@ configure and extend this package to fit your needs.
 
 Currently the following Flow versions are supported:
 
+* `^5.3`
 * `^6.3`
 * `^7.0`