diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index e42843de..72900738 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -25,19 +25,28 @@ on:
 
 jobs:
   test:
-    # NOTE: The worker environment running this job needs firefox and
-    #       geckowebdriver available. Before upgrading to ubuntu-24.04 in the
-    #       future, check and see its available in a location like this:
-    #       https://github.com/actions/runner-images/blob/main/images/linux/Ubuntu2204-Readme.md#browsers-and-drivers
-    #
-    runs-on: ubuntu-22.04
-
     strategy:
       fail-fast: false
       matrix:
         python-version: ["3.8", "3.11"]
         jupyter_server-version: ["1", "2"]
         jupyterlab-version: ["3"]
+        os: [ubuntu-22.04]
+        include:
+          - python-version: "3.11"
+            jupyter_server-version: "2"
+            jupyterlab-version: "3"
+            os: windows-2022
+
+    # NOTE: The worker environment running this job needs firefox and
+    #       geckowebdriver available. Before upgrading to ubuntu-24.04 in the
+    #       future, check and see its available in a location like this:
+    #       https://github.com/actions/runner-images/blob/main/images/linux/Ubuntu2204-Readme.md#browsers-and-drivers
+    #
+    runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        shell: bash
 
     steps:
       - uses: actions/checkout@v3
diff --git a/pyproject.toml b/pyproject.toml
index b1008a65..dab5a774 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,7 +47,7 @@ dependencies = [
     "aiohttp",
     "importlib_metadata >=4.8.3 ; python_version<\"3.10\"",
     "jupyter-server >=1.0",
-    "simpervisor >=0.4",
+    "simpervisor @ git+https://github.com/jupyterhub/simpervisor@7423bec756b74ed29312f967b5177e7e54d07a23",
 ]
 
 [project.optional-dependencies]
@@ -86,6 +86,10 @@ exclude = [
 "jupyter_server_proxy/labextension" = "share/jupyter/labextensions/@jupyterhub/jupyter-server-proxy"
 "jupyter_server_proxy/static" = "share/jupyter/nbextensions/jupyter_server_proxy"
 
+[tool.hatch.metadata]
+# Allow testing git+https://github.com/... dependencies
+allow-direct-references = true
+
 [tool.hatch.metadata.hooks.nodejs]
 path = "labextension/package.json"
 fields = ["description", "authors", "urls"]