diff --git a/12to11.spec b/12to11.spec
index 96c5b9b..bf16687 100644
--- a/12to11.spec
+++ b/12to11.spec
@@ -34,6 +34,8 @@ BuildRequires:  gawk
 BuildRequires:  wayland-devel
 BuildRequires:  libX11-devel
 BuildRequires:  libXext-devel
+BuildRequires:  libXrandr-devel
+BuildRequires:  libXi-devel
 BuildRequires:  libxcb-devel
 BuildRequires:  pixman-devel
 BuildRequires:  libdrm-devel