diff --git a/pyproject.toml b/pyproject.toml
index a110a79..0bcee02 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,12 +4,11 @@ build-backend = "hatchling.build"
 
 [project]
 name = "copick-utils"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 classifiers = [
     "Development Status :: 4 - Beta",
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Python",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
@@ -19,7 +18,7 @@ classifiers = [
 ]
 dynamic = ["version"]
 dependencies = [
-    "copick>=1.16.0",
+    "copick>=1.20.0",
     "click",
     "click-option-group",
     "numpy",