diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index e5b1a6bf..9968dac1 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -235,6 +235,13 @@ ChucK:
   lexer: Java
   primary_extension: .ck
 
+Clean:
+	type: programming
+	color: "#3a81ad"
+	primary_extension: .icl
+	extensions:
+	- .dcl
+
 Clojure:
   type: programming
   ace_mode: clojure