diff --git a/spec/compiler/crystal/tools/doc/highlighter_spec.cr b/spec/compiler/crystal/tools/doc/highlighter_spec.cr
index b59a5564b237..9ec1d9f94d38 100644
--- a/spec/compiler/crystal/tools/doc/highlighter_spec.cr
+++ b/spec/compiler/crystal/tools/doc/highlighter_spec.cr
@@ -42,6 +42,7 @@ describe "Crystal::Doc::Highlighter#highlight" do
     as as? typeof for in with self super private asm
     nil? abstract pointerof
     protected uninitialized instance_sizeof
+    annotation verbatim
   ).each do |kw|
     it_highlights kw, %(<span class="k">#{kw}</span>)
   end
diff --git a/src/compiler/crystal/tools/doc/highlighter.cr b/src/compiler/crystal/tools/doc/highlighter.cr
index a00484dd4ac7..1c541597a4a2 100644
--- a/src/compiler/crystal/tools/doc/highlighter.cr
+++ b/src/compiler/crystal/tools/doc/highlighter.cr
@@ -53,7 +53,8 @@ module Crystal::Doc::Highlighter
                :lib, :fun, :type, :struct, :union, :enum, :macro, :out, :require,
                :case, :when, :select, :then, :of, :abstract, :rescue, :ensure, :is_a?,
                :alias, :pointerof, :sizeof, :instance_sizeof, :as, :as?, :typeof, :for, :in,
-               :undef, :with, :self, :super, :private, :asm, :nil?, :protected, :uninitialized, "new"
+               :undef, :with, :self, :super, :private, :asm, :nil?, :protected, :uninitialized, "new",
+               :annotation, :verbatim
             highlight token, "k", io
           when :true, :false, :nil
             highlight token, "n", io