diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index b0286aace7..88589d05d4 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -15,7 +15,7 @@ repos:
     - id: mypy
       additional_dependencies:
         - "pandas-stubs"
-        - "somacore==0.0.0a7"
+        - "somacore==0.0.0a8"
         - "types-setuptools"
       args: ["--config-file=apis/python/pyproject.toml", "apis/python/src", "apis/python/devtools"]
       pass_filenames: false
diff --git a/apis/python/setup.py b/apis/python/setup.py
index 214c2e8eda..33ccf4fc6e 100644
--- a/apis/python/setup.py
+++ b/apis/python/setup.py
@@ -110,7 +110,7 @@ def run(self):
         "pyarrow >= 9.0.0",
         "scanpy",
         "scipy",
-        "somacore==0.0.0a7",
+        "somacore==0.0.0a8",
         "tiledb==0.20.*",
         "typing-extensions",  # Note "-" even though `import typing_extensions`
     ],