diff --git a/libraries/DHTstable/readme.txt b/libraries/DHTstable/readme.txt
index 773af826..a6de886c 100644
--- a/libraries/DHTstable/readme.txt
+++ b/libraries/DHTstable/readme.txt
@@ -3,3 +3,11 @@ This is the 0.1.13 version of the DHTlib.
 This version is stable for both ARM and AVR.
 
 You can use most examples from https://github.com/RobTillaart/Arduino/tree/master/libraries/DHTlib/examples
+
+update 2015-10-12:
+For multithreading environments for Arduino one could replace
+    delay(wakeupDelay);
+with
+    delayMicroseconds(wakeupDelay * 1000UL);
+see also - https://github.com/RobTillaart/Arduino/pull/25 -
+