diff --git a/.github/workflows/test_and_deploy.yml b/.github/workflows/test_and_deploy.yml
index ef6ca2a..496b631 100644
--- a/.github/workflows/test_and_deploy.yml
+++ b/.github/workflows/test_and_deploy.yml
@@ -23,12 +23,12 @@ jobs:
     strategy:
       matrix:
         platform: [ubuntu-latest]
-        python-version: ['3.8', '3.9', '3.10']
+        python-version: ['3.9', '3.10', '3.11']
         include:
           - platform: windows-latest
-            python-version: '3.10'
-          - platform: macos-latest
-            python-version: '3.10'
+            python-version: '3.11'
+          - platform: macos-13  # arm was not working on the CI
+            python-version: '3.11'
 
     steps:
       - uses: actions/checkout@v3
diff --git a/setup.cfg b/setup.cfg
index fc4e7b7..09a225e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -37,9 +37,9 @@ install_requires =
     segment-anything
     qtpy
     magicgui
-    napari
+    napari >= 0.5.0
 
-python_requires = >=3.8
+python_requires = >=3.9
 include_package_data = True
 package_dir =
     =src
diff --git a/src/napari_segment_anything/_widget.py b/src/napari_segment_anything/_widget.py
index 39bb379..fac837d 100644
--- a/src/napari_segment_anything/_widget.py
+++ b/src/napari_segment_anything/_widget.py
@@ -71,7 +71,7 @@ def __init__(self, viewer: napari.Viewer, model_type: str = "default"):
         self._mask_layer = self._viewer.add_labels(
             data=np.zeros((256, 256), dtype=int),
             name="SAM mask",
-            color={1: "cyan"},
+            colormap={1: "cyan", None: "transparent"},
         )
         self._mask_layer.contour = 2