diff --git a/keywords.txt b/keywords.txt
index 2b8015d432e21142cfe13c5bfa6af70726adfb7d..542b41df93aae8db0b8510a1d1aca8d2970ec1eb 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -8,6 +8,10 @@
 DidacticPSNet	KEYWORD1
 DidacticPSNetBroker	KEYWORD1
 DidacticPSNetClient	KEYWORD1
+EdgeDetector	KEYWORD1
+ChangeDetector	KEYWORD1
+UnblockingTimer	KEYWORD1
+SerialReader	KEYWORD1
 
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 # Methods and Functions (KEYWORD2)