diff --git a/src/config/sidebar.yml b/src/config/sidebar.yml
index 9a1572c552debd3add6aea9a2f759c051c21d6b6..545c575ddf2826b2d8f4e024f73bd727b9439fea 100644
--- a/src/config/sidebar.yml
+++ b/src/config/sidebar.yml
@@ -28,12 +28,12 @@
       link: '/part4/sensitive_detector'
 - label: References
   items:
-    - label: 'DD4hep Manual'
-      link: 'https://dd4hep.web.cern.ch/dd4hep/usermanuals/DD4hepManual/DD4hepManual.pdf'
+    - label: 'DD4hep Reference Documentation'
+      link: 'https://dd4hep.web.cern.ch/dd4hep/reference/classdd4hep_1_1Detector.html'
+    - label: 'DD4hep Manuals'
+      link: 'https://dd4hep.web.cern.ch/dd4hep/page/users-manual/'
     - label: 'XML tags and attributes'
       link: 'https://github.com/AIDASoft/DD4hep/blob/master/DDCore/include/XML/UnicodeValues.h'
-    - label: 'DD4hep Documentation'
-      link: 'https://dd4hep.web.cern.ch/dd4hep/reference/classdd4hep_1_1Detector.html'
     - label: 'Links'
       link: '/links'
       #- label: Usage