diff --git a/crates/languages/src/rust/highlights.scm b/crates/languages/src/rust/highlights.scm
index 44fd61d871..0c3aa7efc7 100644
--- a/crates/languages/src/rust/highlights.scm
+++ b/crates/languages/src/rust/highlights.scm
@@ -184,3 +184,8 @@
 ] @operator
 
 (lifetime) @lifetime
+
+(parameter (identifier) @variable.parameter)
+
+(attribute_item) @attribute
+(inner_attribute_item) @attribute
diff --git a/crates/languages/src/rust/injections.scm b/crates/languages/src/rust/injections.scm
index 0ce91f2287..39042e92c6 100644
--- a/crates/languages/src/rust/injections.scm
+++ b/crates/languages/src/rust/injections.scm
@@ -5,3 +5,11 @@
 (macro_rule
   (token_tree) @content
   (#set! "language" "rust"))
+
+(block_comment
+  (doc_comment) @content
+  (#set! "language" "markdown"))
+
+(line_comment
+  (doc_comment) @content
+  (#set! "language" "markdown"))