diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 54dcfb7..fbf9d73 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -19,12 +19,15 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7, 3.8, 3.9]
-        numpy-version: ["~=1.19.0", "~=1.21.0"]
+        python-version: [3.9, 3.11]
+        numpy-version: ["~=1.21.0", "~=1.26.0"]
+        exclude:
+        - python-version: 3.11
+          numpy-version: "~=1.21.0"
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
diff --git a/pyxdsm/__init__.py b/pyxdsm/__init__.py
index 55e4709..3a5935a 100644
--- a/pyxdsm/__init__.py
+++ b/pyxdsm/__init__.py
@@ -1 +1 @@
-__version__ = "2.3.0"
+__version__ = "2.3.1"
diff --git a/setup.py b/setup.py
index 74ae58e..ea8d36a 100644
--- a/setup.py
+++ b/setup.py
@@ -26,7 +26,7 @@
         "pyxdsm",
     ],
     package_data={"pyxdsm": ["*.tex"]},
-    install_requires=["numpy>=1.16"],
+    install_requires=["numpy>=1.21"],
     python_requires=">=3",
     classifiers=[
         "Operating System :: OS Independent",