diff --git a/web-interface/web-interface.py b/web-interface/web-interface.py
index e05df5e..68950d6 100755
--- a/web-interface/web-interface.py
+++ b/web-interface/web-interface.py
@@ -13,7 +13,7 @@ APP = flask.Flask(__name__)
 
 PROJECT_NAME = 'volumetric-regimes'
 DIR_PATH = '.' # without trailing slash
-PORTNUMBER = 5522
+PORTNUMBER = 5523
 WIKI = 'https://possiblebodies.constantvzw.org/book' # remove tail slash '/'
 PAGENAME = 'Unfolded'
 STYLESHEET_PAD = 'volumetric-regimes.css'