diff --git a/pyproject.toml b/pyproject.toml
index e816aca38..681495a81 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -144,3 +144,4 @@ isort = "full"
 codespell = "full"
 ruamel.yaml = "<0.18.0"
 cryptography = "present"
+certifi = "present"