diff --git a/Makefile b/Makefile
index e9c946e..ef0d858 100644
--- a/Makefile
+++ b/Makefile
@@ -114,7 +114,7 @@ reinstall: uninstall install
 
 dev-install:
 	@echo "Installing project with development dependencies..."
-	uv pip install -e ".[dev]"
+	uv sync --group dev
 
 dev-reinstall: uninstall dev-install
 
diff --git a/pyproject.toml b/pyproject.toml
index e00da6c..0a1c7fa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,12 +20,6 @@ hate_crack = "hate_crack.__main__:main"
 
 [project.optional-dependencies]
 tui = ["simple-term-menu==1.6.6"]
-dev = [
-    "ty==0.0.17",
-    "ruff==0.15.1",
-    "pytest==9.0.2",
-    "pytest-cov==7.0.0",
-]
 
 [tool.setuptools.packages.find]
 include = ["hate_crack*"]
@@ -78,5 +72,9 @@ testpaths = [
 
 [dependency-groups]
 dev = [
+    "ty==0.0.17",
+    "ruff==0.15.1",
+    "pytest==9.0.2",
+    "pytest-cov==7.0.0",
     "pytest-timeout>=2.4.0",
 ]