diff --git a/pyproject.toml b/pyproject.toml
index 4d1b234..eacc4c4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,3 +21,8 @@ dependencies = [
 
 [project.urls]
 Homepage = "https://github.com/aegis-aead/libaegis"
+
+[dependency-groups]
+dev = [
+    "pytest>=8.4.2",
+]