diff --git a/packages/language-python/grammars/ts/indents.scm b/packages/language-python/grammars/ts/indents.scm
index 670948ed1..975389307 100644
--- a/packages/language-python/grammars/ts/indents.scm
+++ b/packages/language-python/grammars/ts/indents.scm
@@ -1,10 +1,16 @@
+; Excluding dictionary key/value separators…
 (dictionary
   (pair ":" @_IGNORE_
-  (#set! capture.final true)))
+  (#set! capture.final)))
 
+; …lambda functions…
 ((lambda ":" @_IGNORE_)
-  (#set! capture.final true))
+  (#set! capture.final))
 
+; …and type annotations on function parameters/class members…
+(":" @_IGNORE_ . (type) (#set! capture.final))
+
+; …all other colons we encounter hint at upcoming indents.
 ":" @indent
 
 ; When typing out "else" after an "if" statement, tree-sitter-python won't