diff --git a/data/sidebars/concepts.yml b/data/sidebars/concepts.yml
index 36bf9678..d3f1e926 100644
--- a/data/sidebars/concepts.yml
+++ b/data/sidebars/concepts.yml
@@ -6,6 +6,8 @@
       link: /concepts/terminology/
     - title: Software Components
       link: /concepts/components/
+    - title: Engineering Principles
+      link: /concepts/principles/
 
 - group: Architecture
   items:
diff --git a/external/dev-ocean b/external/dev-ocean
index 6bbf269d..ab9e7a18 160000
--- a/external/dev-ocean
+++ b/external/dev-ocean
@@ -1 +1 @@
-Subproject commit 6bbf269da9eaf75c0fd42bd2a71944af52db6f04
+Subproject commit ab9e7a18c9a2b61dfaf4854e46748c603208ff20