diff --git a/runtime/queries/python/highlights.scm b/runtime/queries/python/highlights.scm
index 9f7d2790ceb4..04adb3002b52 100644
--- a/runtime/queries/python/highlights.scm
+++ b/runtime/queries/python/highlights.scm
@@ -111,6 +111,9 @@
 
 (integer) @constant.numeric.integer
 (float) @constant.numeric.float
+(expression_statement (string) @content
+	(#match? @content "^\"\"\"")
+) @comment.block.documentation
 (comment) @comment
 (string) @string
 (escape_sequence) @constant.character.escape
diff --git a/runtime/queries/rust/highlights.scm b/runtime/queries/rust/highlights.scm
index 2981075fb07c..88374704afa5 100644
--- a/runtime/queries/rust/highlights.scm
+++ b/runtime/queries/rust/highlights.scm
@@ -30,6 +30,8 @@
   (string_literal)
   (raw_string_literal)
 ] @string
+(line_comment (doc_comment)) @comment.documentation
+(block_comment (doc_comment)) @comment.block.documentation
 [
   (line_comment)
   (block_comment)