diff --git a/Caching.rst b/Caching.rst
index f842d36b..c07269a6 100644
--- a/Caching.rst
+++ b/Caching.rst
@@ -38,6 +38,8 @@ value.
 Single block (faster) vs. bitmaps (slower)
 ******************************************
 
+.. note:: bitmap mode is considered production ready only in uWSGI 2.0.2
+
 In the standard ("single block") configuration a key can only map to a single
 block. Thus if you have a cache block size of 64k your items can be at most
 65,535 bytes long. Conversely items smaller than that will still consume 64k of