diff --git a/README.md b/README.md
index b16045a71bf36cbdf0c94cdf16feaaaf9ec1e3e5..3ad1ff3d7dc96251a0f05c30eafb68fd68ee2fbe 100644
--- a/README.md
+++ b/README.md
@@ -70,14 +70,10 @@ File `config.json`:
     "port": 5005
   },
   "xsd":{
-    "filename":"dcc.xsd",
-    "externalBaseURL":"https://ptb.de/dcc/"
+    "releases":"https://www.ptb.de/dcc/releases.json"
   }
 }
-```
-
-* `externalBaseURL`: Must be ended with a path seperator
-  
+```  
 
 ## API
 
@@ -89,6 +85,13 @@ curl -X POST -H "Content-Type: text/xml" -d @valid_xml_matches_xsd http://localh
 <ok/>
 ```
 
+Validation against an explizit schema version
+```shell
+curl -X POST -H "Content-Type: text/xml" -d @valid_xml_matches_xsd http://localhost:5005/validate?v=2.4.0
+
+<ok/>
+```
+
 Alternative call with `wget`:
 ```shell
 wget --post-file=example.xml --header="Content-Type:text/xml;" -q -O- http://localhost:5005/validate