diff --git a/flake.nix b/flake.nix
index 6ca0c74..d112e8e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -152,6 +152,7 @@
               src = self;
               propagatedBuildInputs = with pkgs; [
                 python3Packages.flask
+                python3Packages.redis
               ];
             };
           defaultPackage = self.packages.${system}.raincloud;
diff --git a/requirements.txt b/requirements.txt
index 7e10602..1a5dc97 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,2 @@
 flask
+redis