diff --git a/yesod-bin/yesod-bin.cabal b/yesod-bin/yesod-bin.cabal
index 9ae7f879..416d6760 100644
--- a/yesod-bin/yesod-bin.cabal
+++ b/yesod-bin/yesod-bin.cabal
@@ -58,7 +58,7 @@ executable             yesod
                      , wai-extra
                      , warp               >= 1.3.7.5
                      , warp-tls           >= 3.0.1
-                     , yaml               >= 0.8          && < 0.9
+                     , yaml               >= 0.8          && < 0.10
                      , zlib               >= 0.5
 
     ghc-options:       -Wall -threaded -rtsopts