diff --git a/evolution-data-server.spec b/evolution-data-server.spec
index a2f2fb4..fcb3e28 100644
--- a/evolution-data-server.spec
+++ b/evolution-data-server.spec
@@ -69,6 +69,7 @@ BuildRequires: libsoup-devel >= %{libsoup_version}
 BuildRequires: libtool
 BuildRequires: nspr-devel
 BuildRequires: nss-devel
+BuildRequires: nss-util-devel
 BuildRequires: sqlite-devel >= %{sqlite_version}
 BuildRequires: vala
 BuildRequires: vala-tools