diff --git a/rc/filetype/python.kak b/rc/filetype/python.kak
index af189e8e..76cf496a 100644
--- a/rc/filetype/python.kak
+++ b/rc/filetype/python.kak
@@ -137,7 +137,7 @@ evaluate-commands %sh{
 }
 
 add-highlighter shared/python/code/ regex (?<=[\w\s\d\)\]'"_])(<=|<<|>>|>=|<>?|>|!=|==|\||\^|&|\+|-|\*\*?|//?|%|~) 0:operator
-add-highlighter shared/python/code/ regex (?<=[\w\s\d'"_])((?<![=<>!])=(?![=])|[+*-]=) 0:builtin
+add-highlighter shared/python/code/ regex (?<=[\w\s\d'"_])((?<![=<>!]):?=(?![=])|[+*-]=) 0:builtin
 add-highlighter shared/python/code/ regex ^\h*(?:from|import)\h+(\S+) 1:module
 
 # Commands