diff --git a/flake.nix b/flake.nix
index 0db00b0e..294023fe 100644
--- a/flake.nix
+++ b/flake.nix
@@ -71,6 +71,8 @@
           ];
           LIBCLANG_PATH = "${pkgs.llvmPackages_18.libclang.lib}/lib";
           CLANG_PATH = "${pkgs.llvmPackages_18.clang}/bin/clang";
+          PROTOC_INCLUDE = "${pkgs.protobuf}/include";
+          PROTOC = "${pkgs.protobuf}/bin/protoc";
 
           # Additional environment variables can be set directly
           # MY_CUSTOM_VAR = "some value";