diff --git a/stack.yaml b/stack.yaml
index a592eba1..ffbb3ccf 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -4,7 +4,7 @@ packages:
 - ./
 
 extra-deps:
-- X11-1.9.2
+- X11-1.10
 
 flags:
   xmonad:
diff --git a/xmonad.cabal b/xmonad.cabal
index fc83a0ac..33676da9 100644
--- a/xmonad.cabal
+++ b/xmonad.cabal
@@ -69,7 +69,7 @@ library
   other-modules:   Paths_xmonad
   hs-source-dirs:  src
   build-depends:   base                  >= 4.9 && < 5
-                 , X11                   >= 1.8 && < 1.10
+                 , X11                   >= 1.10 && < 1.11
                  , containers
                  , data-default
                  , directory