1 files changed, 1 insertions, 0 deletions
diff --git a/haddock.cabal b/haddock.cabal
index 116ee00c..f70d6813 100644
--- a/haddock.cabal
+++ b/haddock.cabal
@@ -149,6 +149,7 @@ library
     directory,
     pretty,
     containers,
+    deepseq,
     array,
     xhtml >= 3000.2 && < 3000.3,
     Cabal >= 1.10,