diff --git a/pkgs/by-name/ri/riemann_c_client/package.nix b/pkgs/by-name/ri/riemann_c_client/package.nix
index 5a691d0fd29e..703d3301a7a5 100644
--- a/pkgs/by-name/ri/riemann_c_client/package.nix
+++ b/pkgs/by-name/ri/riemann_c_client/package.nix
@@ -33,10 +33,13 @@ stdenv.mkDerivation rec {
     "out"
   ];
 
+  strictDeps = true;
+
   nativeBuildInputs = [
     autoreconfHook
     check
     pkg-config
+    protobufc
   ];
   buildInputs = [
     file