diff --git a/flake.nix b/flake.nix
index e5c6b12..c381ec4 100644
--- a/flake.nix
+++ b/flake.nix
@@ -24,7 +24,6 @@
 
       buildRustPackage = args: naersk-lib.buildPackage ({
         root = ./.;
-        src = ./heliwatch;
         nativeBuildInputs = with pkgs; [ pkg-config ];
         buildInputs = with pkgs; [ openssl ];
       } // args);
@@ -32,12 +31,15 @@
       # `nix build`
       packages.heliwatch = buildRustPackage {
         pname = "heliwatch";
+        src = ./heliwatch;
       };
       packages.http-json = buildRustPackage {
         pname = "http-json";
+        src = ./http-json;
       };
       packages.collectd-stats = buildRustPackage {
         pname = "collectd-stats";
+        src = ./collectd-stats;
       };
       defaultPackage = packages.heliwatch;
       checks = packages;