diff --git a/stack.yaml b/stack.yaml
index 72ff7add9..70f04d35b 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -8,7 +8,7 @@ packages:
 
 extra-deps:
 - X11-1.10.2
-- xmonad-0.17.0
+- xmonad-0.18.0
 
 nix:
   packages:
diff --git a/xmonad-contrib.cabal b/xmonad-contrib.cabal
index 1882eb9db..881f8759b 100644
--- a/xmonad-contrib.cabal
+++ b/xmonad-contrib.cabal
@@ -65,7 +65,7 @@ library
                    mtl >= 1 && < 3,
                    unix,
                    X11 >= 1.10 && < 1.11,
-                   xmonad >= 0.16.99999 && < 0.19,
+                   xmonad >= 0.18.0 && < 0.19,
                    utf8-string,
                    deepseq
     default-language: Haskell2010