diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 371dd6721..60a9b6d40 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,8 +17,8 @@ jobs:
       fail-fast: false
       matrix:
         #os: [ubuntu-latest, macOS-latest, windows-latest]
-        os: [ubuntu-latest, windows-latest]
-        python-version: [3.8, 3.9, "3.10"]
+        os: [windows-latest]
+        python-version: ["3.10"]
     steps:
       - uses: actions/checkout@v3
       - uses: conda-incubator/setup-miniconda@v2
diff --git a/pyproject.toml b/pyproject.toml
index b3e650c32..101ca160b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,7 +35,7 @@ dependencies = [
     "universal-pathlib~=0.0",
     "ome-zarr~=0.6",
     "anndata~=0.8",
-    "bfio~=2.3",
+    "bfio==2.3.0",
     "monai-weekly>=1.2.dev2308",
     "tifffile~=2023.2",
     "tqdm~=4.64",