diff --git a/keywords.txt b/keywords.txt
index 1867568..3a02803 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -16,6 +16,7 @@ LowPower	KEYWORD1
 idle	KEYWORD2
 sleep	KEYWORD2
 deepSleep	KEYWORD2
+attachInterruptWakeup	KEYWORD2
 
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 # Constants (LITERAL1)