diff --git a/data/tools/wesnoth/campaignserver_client.py b/data/tools/wesnoth/campaignserver_client.py
index 1ed2bad334a0..52b38697a41d 100755
--- a/data/tools/wesnoth/campaignserver_client.py
+++ b/data/tools/wesnoth/campaignserver_client.py
@@ -11,6 +11,7 @@
 class CampaignClient:
     # First port listed will be used as default.
     portmap = (
+        ("15008", "1.13.x"),
         ("15007", "1.12.x"),
         ("15006", "1.11.x"),
         ("15002", "1.10.x"),
diff --git a/src/addon/validation.cpp b/src/addon/validation.cpp
index cc09694b1b4e..ce464f2cef22 100644
--- a/src/addon/validation.cpp
+++ b/src/addon/validation.cpp
@@ -19,7 +19,7 @@
 
 #include <boost/foreach.hpp>
 
-const unsigned short default_campaignd_port = 15007;
+const unsigned short default_campaignd_port = 15008;
 
 namespace {
 	const std::string addon_type_strings[] = {