diff --git a/doc/evolution.md b/doc/evolution.md
index 915ec12..9e64cd9 100644
--- a/doc/evolution.md
+++ b/doc/evolution.md
@@ -1694,7 +1694,7 @@ architecture cleanup:
 - Linked [OptMem](https://github.com/VictorTaelin/OptMem) as the external
   persistent-memory implementation.
 
-## Phase 33: Current architecture overview (Aug 17)
+## Phase 32: Current architecture overview (Aug 17)
 
 At this point the runtime has two services and one integration surface: