diff --git a/flake.nix b/flake.nix
index 90abf9c..32d5766 100644
--- a/flake.nix
+++ b/flake.nix
@@ -23,6 +23,7 @@
           git
           pkg-config
           openssl
+          protobuf
         ];
         shellHook = "exec fish";
       };