diff --git a/ci/github-script/commits.js b/ci/github-script/commits.js
index d382f0949d36..e5553c59ce7f 100644
--- a/ci/github-script/commits.js
+++ b/ci/github-script/commits.js
@@ -220,14 +220,9 @@ module.exports = async function ({ github, context, core, dry }) {
         }
 
         core.summary.addRaw('<details><summary>Show diff</summary>')
-        core.summary.addCodeBlock(
-          truncated
-            .join('\n')
-            .replace(/&/g, '&amp;')
-            .replace(/</g, '&lt;')
-            .replace(/>/g, '&gt;'),
-          'diff',
-        )
+        core.summary.addRaw('\n\n``````````diff', true)
+        core.summary.addRaw(truncated.join('\n'), true)
+        core.summary.addRaw('``````````', true)
         core.summary.addRaw('</details>')
       }