diff --git a/README.md b/README.md
index 82e9717..a38c16f 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@
 
 This is an experimental pure Java implementation of Cap'n Proto.
 
+It doesn't do much yet.
+
 To get started, try this:
 
 ```