diff --git a/releasenotes.md b/releasenotes.md
index 57192a29e..054d11900 100644
--- a/releasenotes.md
+++ b/releasenotes.md
@@ -20,6 +20,7 @@
 ### Stdlib changes
 - Added '%h' and '%H' for printing out binary data in hexadecimal using the formatter.
 - Added weakly linked `__powidf2`
+- Added channels for threads.
 
 ## 0.6.6 Change list