diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bf7ae798..ba460fb0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,22 +14,12 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.10', '3.11', '3.12', '3.13']
         mpi: ['mpich', 'openmpi', 'intelmpi']
         rank: ['2', '3', '4']
         exclude:
           - os: macos-latest
             mpi: 'intelmpi'
-        # MPICH v4 fails on Ubuntu for Python <3.10
-        # ”libfabric EFA provider is operating in a
-        # condition that could result in memory
-        # corruption”
-          - os: ubuntu-latest
-            python-version: '3.8'
-            mpi: 'mpich'
-          - os: ubuntu-latest
-            python-version: '3.9'
-            mpi: 'mpich'
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
diff --git a/.github/workflows/deploy-docs.yml b/.github/workflows/deploy-docs.yml
index 0df598e2..59e83239 100644
--- a/.github/workflows/deploy-docs.yml
+++ b/.github/workflows/deploy-docs.yml
@@ -21,7 +21,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: 3.9
+          python-version: 3.11
 
       - name: Install dependencies
         run: |
diff --git a/.github/workflows/flake.yml b/.github/workflows/flake.yml
index 971a5dd7..5a4d6097 100644
--- a/.github/workflows/flake.yml
+++ b/.github/workflows/flake.yml
@@ -14,7 +14,7 @@ jobs:
       - name: Set up Python environment
         uses: actions/setup-python@v4
         with:
-          python-version: "3.8"
+          python-version: "3.11"
       - name: flake8 Lint
         uses: py-actions/flake8@v2
         with: