diff --git a/flake.nix b/flake.nix
index c19b978..11c86d8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -14,6 +14,7 @@
           fastapi
           uvicorn
           aiohttp
+          certifi
         ];
         devDependencies = ps: with ps; [
           fastapi