diff --git a/Yesod/Form/Fields.hs b/Yesod/Form/Fields.hs
--- a/Yesod/Form/Fields.hs
+++ b/Yesod/Form/Fields.hs
@@ -437,6 +437,8 @@
       "yes" -> Right $ Just True
       "on" -> Right $ Just True
       "no" -> Right $ Just False
+      "true" -> Right $ Just True
+      "false" -> Right $ Just False
       t -> Left $ SomeMessage $ MsgInvalidBool t
     showVal = either (\_ -> False)
 
diff --git a/yesod-form.cabal b/yesod-form.cabal
--- a/yesod-form.cabal
+++ b/yesod-form.cabal
@@ -1,5 +1,5 @@
 name:            yesod-form
-version:         1.3.2.1
+version:         1.3.2.2
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>