diff --git a/haddock.cabal b/haddock.cabal
index e1f7565a47c6f07b67b0181ec5617adbf002413b..c0fc3a4f1b61469c4f6353007d47d6b82d937173 100644
--- a/haddock.cabal
+++ b/haddock.cabal
@@ -64,7 +64,8 @@ executable haddock
 
   -- haddock typically only supports a single GHC major version 
   build-depends:
-    base ^>= 4.12.0
+    -- FIXME: drop 4.12.0.0 once GHC HEAD updates to 4.13.0.0
+    base ^>= 4.12.0.0 || ^>= 4.13.0.0
 
   if flag(in-ghc-tree)
     hs-source-dirs: haddock-api/src,  haddock-library/src