diff --git a/README.md b/README.md
index ffb877d..979e219 100644
--- a/README.md
+++ b/README.md
@@ -5,3 +5,5 @@ Wrapper for Trello.
 This wraps the `com.taskadapter:trello-java-wrapper` library.
 
 It is intended for use on my `slushy` and `fuller` projects. It was originally developed as part of `slushy` and was extracted when preparing to start on `fuller` which would need some of the same functionality.
+
+Requires JDK 11+