diff --git a/.github/workflows/build-cedarpy.yml b/.github/workflows/build-cedarpy.yml
index 63809a8cb6d..13e8db31416 100644
--- a/.github/workflows/build-cedarpy.yml
+++ b/.github/workflows/build-cedarpy.yml
@@ -51,6 +51,14 @@ jobs:
         # ["pyo3/extension-module"]` (no abi3-pyNN), so every interpreter
         # needs its own build. pp311 is dropped: PyPy has no riscv64 port.
         python: ['cp39', 'cp310', 'cp311', 'cp312', 'cp313', 'cp314', 'cp314t']
+        exclude:
+          # 4.12.0 raised Requires-Python to >=3.10 (4.8.7 is still >=3.9), so its
+          # cp39 wheel can't even be installed to be tested. Add each newer version
+          # here as it is declared.
+          - version: "4.12.0"
+            python: cp39
+          - version: "4.12.1"
+            python: cp39
 
     env:
       CEDARPY_VERSION: ${{ matrix.version }}
diff --git a/docs/packages/cedarpy.yaml b/docs/packages/cedarpy.yaml
index 4a11e709152..51383c99640 100644
--- a/docs/packages/cedarpy.yaml
+++ b/docs/packages/cedarpy.yaml
@@ -27,3 +27,5 @@ versions:
   - filename: cedarpy-4.8.7-cp39-cp39-manylinux_2_39_riscv64.whl
     sha256: c216bbe0c5f48b3b70a10dd15e0e93fb942dd29c73c2bdb3aecc3c31c10c3dc3
     requires-python: '>=3.9'
+- version: 4.12.0
+- version: 4.12.1