diff --git a/README.md b/README.md
index cf14d68..2595b0f 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,7 @@ or
 
 at the top of DallasTemperature.h
 
+Finally, please include OneWire from Paul Stoffregen in the library manager before you begin.
 
 ## Credits