diff --git a/mqtt-client-website/pom.xml b/mqtt-client-website/pom.xml
index ec2bfa8..744f40c 100644
--- a/mqtt-client-website/pom.xml
+++ b/mqtt-client-website/pom.xml
@@ -45,7 +45,7 @@
 
   <properties>
     <website-root>versions/${project.version}/website</website-root>
-    <scala-version>2.9.1</scala-version>
+    <scala-version>2.13.1</scala-version>
     <scala-plugin-version>2.14</scala-plugin-version>
     <scalate-version>1.5.3</scalate-version>
     <scalamd-version>1.5</scalamd-version>