diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,14 @@
 # Changelog
 
+### 0.7.4.0
+
+* Raise upper length limit of `UTCTime` since aeson-0.9 increased the precision.
+* Add `JSONSchema Aeson.Value` instance.
+
 #### 0.7.3.7
 
 * Allow `generic-deriving 1.8.*`
+* Allow `vector 0.11.*`
 
 #### 0.7.3.6
 
diff --git a/json-schema.cabal b/json-schema.cabal
--- a/json-schema.cabal
+++ b/json-schema.cabal
@@ -1,5 +1,5 @@
 name:                json-schema
-version:             0.7.3.7
+version:             0.7.4.0
 synopsis:            Types and type classes for defining JSON schemas.
 description:         Types and type classes for defining JSON schemas.
                      .
@@ -44,7 +44,7 @@
     , text >= 0.10 && < 1.3
     , time >= 1.2 && < 1.6
     , unordered-containers == 0.2.*
-    , vector == 0.10.*
+    , vector >= 0.10 && < 0.12
   -- Data.Proxy.Proxy
   if impl(ghc < 7.8)
     build-depends: tagged >= 0.2 && < 0.9
@@ -73,7 +73,7 @@
     , tasty-hunit == 0.9.*
     , tasty-th == 0.1.*
     , text >= 0.10 && < 1.3
-    , vector == 0.10.*
+    , vector >= 0.10 && < 0.12
   if impl(ghc < 7.8)
     build-depends: tagged >= 0.2 && < 0.9
   if impl(ghc < 7.6)
diff --git a/src/Data/JSON/Schema/Types.hs b/src/Data/JSON/Schema/Types.hs
--- a/src/Data/JSON/Schema/Types.hs
+++ b/src/Data/JSON/Schema/Types.hs
@@ -1,8 +1,8 @@
 {-# LANGUAGE
     FlexibleInstances
   , OverloadedStrings
-  , TypeSynonymInstances
   , ScopedTypeVariables
+  , TypeSynonymInstances
   #-}
 -- | Types for defining JSON schemas.
 module Data.JSON.Schema.Types
@@ -159,10 +159,13 @@
   schema = Map . schema . fmap (head . H.elems)
 
 instance JSONSchema UTCTime where
-  schema _ = Value LengthBound { lowerLength = Just 20, upperLength = Just 24 }
+  schema _ = Value LengthBound { lowerLength = Just 20, upperLength = Just 33 }
 
 instance JSONSchema a => JSONSchema (S.Set a) where
   schema = Array unboundedLength True . schema . fmap S.findMin
+
+instance JSONSchema Aeson.Value where
+  schema _ = Any
 
 instance (JSONSchema a, JSONSchema b) => JSONSchema (a, b) where
   schema s = Tuple