diff --git a/_posts/release_notes/release_notes_5_5_0.md b/_posts/release_notes/2016-06-25-release-notes-5-5-0.md
similarity index 99%
rename from _posts/release_notes/release_notes_5_5_0.md
rename to _posts/release_notes/2016-06-25-release-notes-5-5-0.md
index a87098773a..3392d8feeb 100644
--- a/_posts/release_notes/release_notes_5_5_0.md
+++ b/_posts/release_notes/2016-06-25-release-notes-5-5-0.md
@@ -5,7 +5,7 @@ keywords: release notes, announcements, what's new, new features
 last_updated: June 25, 2016
 summary: "Version 5.5.0 of the PMD Open Source Project, released June 25, 2016."
 sidebar: mydoc_sidebar
-permalink: release_notes_5_5_0.html
+permalink: 2016-06-25-release-notes-5-5-0.html
 folder: mydoc
 ---