diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index cfff3c5a2..3393fd069 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,16 +17,19 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
         with:
-          python-version: 3.6
+          python-version: "3.6"
       - uses: actions/setup-python@v2
         with:
-          python-version: 3.7
+          python-version: "3.7"
       - uses: actions/setup-python@v2
         with:
-          python-version: 3.8
+          python-version: "3.8"
       - uses: actions/setup-python@v2
         with:
-          python-version: 3.9.5
+          python-version: "3.9.5"
+      - uses: actions/setup-python@v2
+        with:
+          python-version: "3.10"
       - name: Install cffi and virtualenv
         run: pip install cffi virtualenv
       - uses: actions-rs/toolchain@v1
@@ -89,7 +92,7 @@ jobs:
           args: --target x86_64-unknown-linux-musl
       - uses: actions/setup-python@v2
         with:
-          python-version: pypy-3.7
+          python-version: "pypy-3.7"
       - name: test build pypy wheel
         run: |
           cargo run -- build -i pypy3 -m test-crates/pyo3-mixed-submodule/Cargo.toml
@@ -160,7 +163,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v1
         with:
-          python-version: 3.8
+          python-version: "3.8"
       - uses: docker/setup-buildx-action@v1
       - name: Cache Docker layers
         uses: actions/cache@v2
@@ -208,9 +211,9 @@ jobs:
           - target: armv7-unknown-linux-gnueabihf
             arch: armv7
             abi: cp39-cp39
-          # - target: s390x-unknown-linux-gnu
-          #   arch: s390x
-          #   abi: cp310-cp310
+          - target: s390x-unknown-linux-gnu
+            arch: s390x
+            abi: cp310-cp310
     steps:
       - uses: actions/checkout@v2
       - name: Build Wheels