diff --git a/_config.yml b/_config.yml
index 176761c..9eeb6cf 100644
--- a/_config.yml
+++ b/_config.yml
@@ -14,4 +14,4 @@ external:
         url: "https://git.zom.bi/explore/projects"
     -
         name: "Wiki"
-        url: "https://wiki.zom.bi"
+        url: "https://w.zom.bi"
diff --git a/assets/images/mediawiki.png b/assets/images/mediawiki.png
new file mode 100644
index 0000000..167b013
Binary files /dev/null and b/assets/images/mediawiki.png differ
diff --git a/services-en.md b/services-en.md
index ba2f93a..d28c0bf 100644
--- a/services-en.md
+++ b/services-en.md
@@ -65,6 +65,18 @@ You're welcome to explore our public repositories.
 
 <div style="clear: right"></div>
 
+## Mediawiki
+
+<img src="assets/images/mediawiki.png" width="150"
+style="float: left; margin:-14px 34px 18px 34px; " />
+
+[Mediawiki](https://mediawiki.org) is a Wiki Software that has been developed
+by the Wikimedia Foundation for use in Wikipedia. We're hosting
+an own Mediawiki instance, which we use to document our services and save the
+protocols for our assemblies. You can find it at [w.zom.bi](https://w.zom.bi).
+
+<div style="clear: left"></div>
+
 ## Cytube
 
 [Cytube](http://cytu.be) is a web service to watch videos from various sources
diff --git a/services.md b/services.md
index c190840..78b5594 100644
--- a/services.md
+++ b/services.md
@@ -64,6 +64,19 @@ Unsere Gitlab-Instanz befindet sich unter [git.zom.bi](https://git.zom.bi).
 
 <div style="clear: right"></div>
 
+## Mediawiki
+
+<img src="assets/images/mediawiki.png" width="150"
+style="float: left; margin:-14px 34px 18px 34px; " />
+
+[Mediawiki](https://mediawiki.org) ist eine Wiki-Software, die von der
+Wikimedia-Foundation unter anderem für Wikipedia entwickelt wurde. Wir hosten
+eine Mediawiki-Instanz, die wir verwenden um unsere Services zu dokumentieren
+und unsere Plena zu protokollieren. Sie befindet sich unter
+[w.zom.bi](https://w.zom.bi).
+
+<div style="clear: left"></div>
+
 ## Cytube
 
 [Cytube](http://cytu.be) ist eine Webanwendung mit der man gemeinsam und