diff --git a/README.md b/README.md
index 6b8e596..e3aacdf 100644
--- a/README.md
+++ b/README.md
@@ -259,3 +259,5 @@ Here is checklist what was done or should be done in the next PCB release.
     [x] Descriptive audio jack schematic symbol
     [x] USB ID pin to RTC WAKEUPn
     [x] Move 25MHz clock down closer to LEDs
+    [ ] i2c chip U11 VCC1=2.5V EN=3.3V for low power sleep
+ 
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