diff --git a/pyproject.toml b/pyproject.toml
index 16761ff..096113b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,11 @@ description = "Dakiny's Discord Bot."
 readme = "README.md"
 
 [dependency-groups]
-dev = ["ruff<1.0.0,>=0.6.9"]
+dev = [
+    "pytest>=8.3.5",
+    "pytest-cov>=6.1.1",
+    "ruff<1.0.0,>=0.6.9",
+]
 
 [tool.ruff]
 # Exclude a variety of commonly ignored directories.