diff --git a/gnu/packages/wm.scm b/gnu/packages/wm.scm
index 4ec465f8751..7c58770de7e 100644
--- a/gnu/packages/wm.scm
+++ b/gnu/packages/wm.scm
@@ -563,6 +563,7 @@ Haskell, no knowledge of the language is required to install and use it.")
        ("ghc-random" ,ghc-random)
        ("ghc-utf8-string" ,ghc-utf8-string)
        ("ghc-extensible-exceptions" ,ghc-extensible-exceptions)
+       ("ghc-semigroups", ghc-semigroups)
        ("ghc-x11" ,ghc-x11)
        ("ghc-x11-xft" ,ghc-x11-xft)
        ("xmonad" ,xmonad)))