diff --git a/src/charm.py b/src/charm.py
index 0feac0b..b36e899 100755
--- a/src/charm.py
+++ b/src/charm.py
@@ -50,6 +50,7 @@ def __init__(self, *args):
         super().__init__(*args)
 
         self.container = self.unit.get_container(self._container_name)
+        self.unit.open_port(protocol="tcp", port=self._port)
         self.ingress = IngressPerAppRequirer(
             self,
             port=self._port,