diff --git a/compose_viz/parser.py b/compose_viz/parser.py
index c67186c..64e8613 100644
--- a/compose_viz/parser.py
+++ b/compose_viz/parser.py
@@ -75,7 +75,7 @@ class Parser:
                         container_port = str(int(port_data))
                         host_port = f"0.0.0.0:{container_port}"
                     elif type(port_data) is str:
-                        regex = r"(?P<host_ip>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:)?((?P<host_port>\d+(\-\d+)?):)?((?P<container_port>\d+(\-\d+)?))?(/(?P<protocol>\w+))?"  # noqa: E501
+                        regex = r"((?P<host_ip>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:)|:)?((?P<host_port>\d+(\-\d+)?):)?((?P<container_port>\d+(\-\d+)?))?(/(?P<protocol>\w+))?"  # noqa: E501
                         match = re.match(regex, port_data)
 
                         if match:
diff --git a/tests/test_parse_file.py b/tests/test_parse_file.py
index 095c024..255d750 100644
--- a/tests/test_parse_file.py
+++ b/tests/test_parse_file.py
@@ -172,6 +172,10 @@ from compose_viz.parser import Parser
                                 container_port="6060",
                                 protocol=Protocol.udp,
                             ),
+                            Port(
+                                host_port="0.0.0.0:7777",
+                                container_port="7777",
+                            ),
                             Port(
                                 host_port="127.0.0.1:8080",
                                 container_port="80",
diff --git a/tests/ymls/ports/docker-compose.yml b/tests/ymls/ports/docker-compose.yml
index 642a975..725e10a 100644
--- a/tests/ymls/ports/docker-compose.yml
+++ b/tests/ymls/ports/docker-compose.yml
@@ -11,6 +11,7 @@ services:
       - "127.0.0.1:8001:8001"
       - "127.0.0.1:5000-5010:5000-5010"
       - "6060:6060/udp"
+      - ":7777"
       - target: 80
         host_ip: 127.0.0.1
         published: 8080