diff --git a/compose_viz/parser.py b/compose_viz/parser.py
index 37e8b37..2440bce 100644
--- a/compose_viz/parser.py
+++ b/compose_viz/parser.py
@@ -6,7 +6,7 @@ from ruamel.yaml import YAML
 from compose_viz.compose import Compose, Service
 from compose_viz.extends import Extends
 from compose_viz.port import Port, Protocol
-from compose_viz.volume import AccessMode, Volume, VolumeType
+from compose_viz.volume import Volume, VolumeType
 
 
 class Parser:
@@ -190,9 +190,7 @@ class Parser:
                             service_volumes.append(Volume(source=spilt_data[0], target=spilt_data[1]))
                         elif len(spilt_data) == 3:
                             service_volumes.append(
-                                Volume(
-                                    source=spilt_data[0], target=spilt_data[1], access_mode=AccessMode[spilt_data[2]]
-                                )
+                                Volume(source=spilt_data[0], target=spilt_data[1], access_mode=spilt_data[2])
                             )
 
             service_links: List[str] = []
diff --git a/compose_viz/volume.py b/compose_viz/volume.py
index f86d203..192ed97 100644
--- a/compose_viz/volume.py
+++ b/compose_viz/volume.py
@@ -8,17 +8,8 @@ class VolumeType(str, Enum):
     npipe = "npipe"
 
 
-class AccessMode(str, Enum):
-    rw = "rw"
-    ro = "ro"
-    z = "z"
-    Z = "Z"
-
-
 class Volume:
-    def __init__(
-        self, source: str, target: str, type: VolumeType = VolumeType.volume, access_mode: AccessMode = AccessMode.rw
-    ):
+    def __init__(self, source: str, target: str, type: VolumeType = VolumeType.volume, access_mode: str = "rw"):
         self._source = source
         self._target = target
         self._type = type
diff --git a/tests/test_parse_file.py b/tests/test_parse_file.py
index e760c9e..d624a43 100644
--- a/tests/test_parse_file.py
+++ b/tests/test_parse_file.py
@@ -5,7 +5,7 @@ from compose_viz.extends import Extends
 from compose_viz.parser import Parser
 from compose_viz.port import Port, Protocol
 from compose_viz.service import Service
-from compose_viz.volume import AccessMode, Volume, VolumeType
+from compose_viz.volume import Volume, VolumeType
 
 
 @pytest.mark.parametrize(
@@ -219,7 +219,7 @@ from compose_viz.volume import AccessMode, Volume, VolumeType
                             Volume(
                                 source="cli-volume",
                                 target="/var/lib/backup/data",
-                                access_mode=AccessMode.ro,
+                                access_mode="ro,z",
                             ),
                         ],
                     ),
diff --git a/tests/test_volume.py b/tests/test_volume.py
index d1d4cac..b3651ec 100644
--- a/tests/test_volume.py
+++ b/tests/test_volume.py
@@ -1,4 +1,4 @@
-from compose_viz.volume import AccessMode, Volume, VolumeType
+from compose_viz.volume import Volume, VolumeType
 
 
 def test_volume_init_normal() -> None:
@@ -8,7 +8,7 @@ def test_volume_init_normal() -> None:
         assert v.source == "./foo"
         assert v.target == "./bar"
         assert v.type == VolumeType.volume
-        assert v.access_mode == AccessMode.rw
+        assert v.access_mode == "rw"
     except Exception as e:
         assert False, e
 
@@ -20,18 +20,18 @@ def test_volume_with_type() -> None:
         assert v.source == "./foo"
         assert v.target == "./bar"
         assert v.type == VolumeType.bind
-        assert v.access_mode == AccessMode.rw
+        assert v.access_mode == "rw"
     except Exception as e:
         assert False, e
 
 
 def test_volume_with_access_mode() -> None:
     try:
-        v = Volume(source="./foo", target="./bar", access_mode=AccessMode.ro)
+        v = Volume(source="./foo", target="./bar", access_mode="ro,z")
 
         assert v.source == "./foo"
         assert v.target == "./bar"
         assert v.type == VolumeType.volume
-        assert v.access_mode == AccessMode.ro
+        assert v.access_mode == "ro,z"
     except Exception as e:
         assert False, e
diff --git a/tests/ymls/volumes/docker-compose.yml b/tests/ymls/volumes/docker-compose.yml
index dd004c1..4edb77c 100644
--- a/tests/ymls/volumes/docker-compose.yml
+++ b/tests/ymls/volumes/docker-compose.yml
@@ -11,7 +11,7 @@ services:
   common:
     image: busybox
     volumes:
-      - common-volume:/var/lib/backup/data:rw
+      - common-volume:/var/lib/backup/data:rw,z
   cli:
     extends:
       service: common