diff --git a/src/colab/utils/highlighting.py b/src/colab/utils/highlighting.py
index 353d84b..8f41b7c 100644
--- a/src/colab/utils/highlighting.py
+++ b/src/colab/utils/highlighting.py
@@ -1,8 +1,15 @@
 from haystack.utils import Highlighter
 from django.conf import settings
+from django.utils.html import escape, strip_tags
 
 
 class ColabHighlighter(Highlighter):
+    def highlight(self, text_block):
+        self.text_block = escape(strip_tags(text_block))
+        highlight_locations = self.find_highlightable_words()
+        start_offset, end_offset = self.find_window(highlight_locations)
+        return self.render_html(highlight_locations, start_offset, end_offset)
+
     def find_window(self, highlight_locations):
         """Getting the HIGHLIGHT_NUM_CHARS_BEFORE_MATCH setting
         to find how many characters before the first word found should
--
libgit2 0.21.2