diff --git a/mkdocs.yml b/mkdocs.yml
index 4b097e4..76b716c 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -91,6 +91,7 @@ nav:
       - Overview: developer/README.md
       - Developer:
           - API versioning: developer/developer/api-versioning.md
+          - Federation pinned versions: developer/developer/federation-pinned-versions.md
           - How to build wire-server: developer/developer/building.md
           - Writing code interacting with cassandra: developer/developer/cassandra-interaction.md
           - Changelog: developer/developer/changelog.md
diff --git a/src/developer/README.md b/src/developer/README.md
index 1eea82c..df9ac4a 100644
--- a/src/developer/README.md
+++ b/src/developer/README.md
@@ -11,6 +11,7 @@ help you.
 
 ## [Developer](developer/README.md)
   - [API versioning](developer/api-versioning.md)
+  - [Federation pinned versions](developer/federation-pinned-versions.md)
   - [How to build wire-server](developer/building.md)
   - [Writing code interacting with cassandra](developer/cassandra-interaction.md)
   - [Changelog](developer/changelog.md)
diff --git a/src/developer/developer/README.md b/src/developer/developer/README.md
index f9babca..cc769a8 100644
--- a/src/developer/developer/README.md
+++ b/src/developer/developer/README.md
@@ -2,6 +2,7 @@
 
 ## Contents
   - [API versioning](api-versioning.md)
+  - [Federation pinned versions](federation-pinned-versions.md)
   - [How to build wire-server](building.md)
   - [Writing code interacting with cassandra](cassandra-interaction.md)
   - [Changelog](changelog.md)
diff --git a/src/developer/developer/federation-pinned-versions.md b/src/developer/developer/federation-pinned-versions.md
new file mode 120000
index 0000000..e61cdaa
--- /dev/null
+++ b/src/developer/developer/federation-pinned-versions.md
@@ -0,0 +1 @@
+../../../wire-server/docs/src/developer/developer/federation-pinned-versions.md
\ No newline at end of file
diff --git a/wire-server b/wire-server
index b78a2fb..9e355e1 160000
--- a/wire-server
+++ b/wire-server
@@ -1 +1 @@
-Subproject commit b78a2fbb4ed4685df02a38144ed240c7fc6698ea
+Subproject commit 9e355e16b2454f6b3cbfafc77e10f39af3e069bd