diff --git a/builder/test-vncserver b/builder/test-vncserver
index f05f687..b8699b5 100755
--- a/builder/test-vncserver
+++ b/builder/test-vncserver
@@ -8,7 +8,8 @@ cd "$(dirname "$0")"
 docker build --build-arg KASMVNC_PACKAGE_DIR="build/${os_codename}" \
   -t kasmvnctester_${os}:$os_codename \
   -f dockerfile.${os}_${os_codename}.easy_start_script.test .
-  docker run -it -v $(realpath ${PWD}/..):/src -p 8443:8443 -p 8444:8444 --rm \
+docker run -it -v $(realpath ${PWD}/..):/src -p 8443:8443 -p 8444:8444 \
+  -p 8445:8445 --rm \
   -e KASMVNC_VERBOSE_LOGGING=$KASMVNC_VERBOSE_LOGGING \
   -e "VNC_USER=foo" -e "VNC_PW=foobar" \
   kasmvnctester_${os}:$os_codename