diff --git a/threads/README.md b/threads/README.md
index 30d2821..5dc89ae 100644
--- a/threads/README.md
+++ b/threads/README.md
@@ -1,5 +1,8 @@
 # A pure javascript shim for WASI Preview 1 threads
 
+> [!WARNING]
+> The code in this directory is less production ready than the main browser_wasi_shim code.
+
 This project is implement threads on browser_wasi_shim
 
 # Features