diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3b332fc..1873b17 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11"]
         os: [ubuntu-latest, windows-latest, macos-latest]
 
     steps:
diff --git a/pyproject.toml b/pyproject.toml
index c5a23b3..115e988 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,7 @@ build-backend = "hatchling.build"
 name = "cellmap-data"
 description = "Utility for loading CellMap data for machine learning training, utilizing PyTorch, and Jackson Lab's ZarrDataset."
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 license = { text = "BSD 3-Clause License" }
 authors = [
     { email = "rhoadesj@hhmi.org", name = "Jeff Rhoades" },
@@ -18,8 +18,8 @@ classifiers = [
     "License :: OSI Approved :: BSD License",
     "Natural Language :: English",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
-    "Programming Language :: Python :: 3.9",
+    # "Programming Language :: Python :: 3.8",
+    # "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Typing :: Typed",