diff --git a/nix.spec.in b/nix.spec.in
index 8b1ea8a543..9d93c654d0 100644
--- a/nix.spec.in
+++ b/nix.spec.in
@@ -16,6 +16,7 @@ BuildRoot: %(mktemp -ud %{_tmppath}/%{name}-%{version}-%{release}-XXXXXX)
 %endif
 BuildRequires: perl(DBD::SQLite)
 BuildRequires: perl(DBI)
+BuildRequires: perl(WWW::Curl)
 BuildRequires: perl(ExtUtils::ParseXS)
 Requires: /usr/bin/perl
 Requires: curl