diff --git a/xonotic.spec b/xonotic.spec
index ecc71d5..60d4108 100644
--- a/xonotic.spec
+++ b/xonotic.spec
@@ -41,6 +41,7 @@ BuildRequires: libXpm-devel
 BuildRequires: libXxf86dga-devel
 BuildRequires: libXxf86vm-devel
 BuildRequires: SDL2-devel
+BuildRequires: zlib-devel
 Requires: xonotic-data = %{version}
 Requires: darkplaces = %{dpver}-%{release}
 Requires: opengl-games-utils