--- a/gi-gdkx11.cabal
+++ b/gi-gdkx11.cabal
@@ -26,6 +26,7 @@
 
       pkgconfig-depends: gdk-x11-3.0 >= 3.22
       build-depends: base >= 4.7 && <5,
+                     gi-cairo,
                      haskell-gi-base == 0.21.*,
                      haskell-gi == 0.21.*,
                      gi-gobject == 2.0.*,
