diff --git a/queries/diff/highlights.scm b/queries/diff/highlights.scm
index 44506c056..2a064eb7a 100644
--- a/queries/diff/highlights.scm
+++ b/queries/diff/highlights.scm
@@ -1,3 +1,5 @@
+(comment) @comment @spell
+
 [
   (addition)
   (new_file)
diff --git a/queries/diff/injections.scm b/queries/diff/injections.scm
new file mode 100644
index 000000000..2f0e58eb6
--- /dev/null
+++ b/queries/diff/injections.scm
@@ -0,0 +1,2 @@
+((comment) @injection.content
+  (#set! injection.language "comment"))