diff --git a/pyproject.toml b/pyproject.toml
index 21125b5..37de81f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,10 @@ version = "0.1.0"
 description = "Quick reference for common LeetCode Python techniques and patterns."
 readme = "README.md"
 requires-python = ">=3.13"
-dependencies = ["mypy>=1.13.0", "ruff>=0.7.4"]
+dependencies = []
+
+[dependency-groups]
+dev = ["mypy>=1.13.0", "ruff>=0.7.4"]
 
 [tool.ruff]
 select = [
diff --git a/uv.lock b/uv.lock
index 5193e20..d012ade 100644
--- a/uv.lock
+++ b/uv.lock
@@ -5,13 +5,17 @@ requires-python = ">=3.13"
 name = "leetcode-py-cheatsheet"
 version = "0.1.0"
 source = { virtual = "." }
-dependencies = [
+
+[package.dependency-groups]
+dev = [
     { name = "mypy" },
     { name = "ruff" },
 ]
 
 [package.metadata]
-requires-dist = [
+
+[package.metadata.dependency-groups]
+dev = [
     { name = "mypy", specifier = ">=1.13.0" },
     { name = "ruff", specifier = ">=0.7.4" },
 ]