diff --git a/amazonka-cognito-sync.cabal b/amazonka-cognito-sync.cabal
--- a/amazonka-cognito-sync.cabal
+++ b/amazonka-cognito-sync.cabal
@@ -1,5 +1,5 @@
 name:                  amazonka-cognito-sync
-version:               0.1.1
+version:               0.1.2
 synopsis:              Amazon Cognito Sync SDK.
 homepage:              https://github.com/brendanhay/amazonka
 license:               OtherLicense
@@ -58,5 +58,5 @@
     other-modules:
 
     build-depends:
-          amazonka-core == 0.1.1.*
+          amazonka-core == 0.1.2.*
         , base          >= 4.7     && < 5
diff --git a/gen/Network/AWS/CognitoSync/Types.hs b/gen/Network/AWS/CognitoSync/Types.hs
--- a/gen/Network/AWS/CognitoSync/Types.hs
+++ b/gen/Network/AWS/CognitoSync/Types.hs
@@ -138,7 +138,7 @@
 data IdentityPoolUsage = IdentityPoolUsage
     { _ipuDataStorage       :: Maybe Integer
     , _ipuIdentityPoolId    :: Maybe Text
-    , _ipuLastModifiedDate  :: Maybe ISO8601
+    , _ipuLastModifiedDate  :: Maybe POSIX
     , _ipuSyncSessionsCount :: Maybe Integer
     } deriving (Eq, Ord, Show)
 
@@ -235,12 +235,12 @@
     toJSON = toJSONText
 
 data Dataset = Dataset
-    { _dCreationDate     :: Maybe ISO8601
+    { _dCreationDate     :: Maybe POSIX
     , _dDataStorage      :: Maybe Integer
     , _dDatasetName      :: Maybe Text
     , _dIdentityId       :: Maybe Text
     , _dLastModifiedBy   :: Maybe Text
-    , _dLastModifiedDate :: Maybe ISO8601
+    , _dLastModifiedDate :: Maybe POSIX
     , _dNumRecords       :: Maybe Integer
     } deriving (Eq, Ord, Show)
 
@@ -357,10 +357,10 @@
     toJSON = toJSONText
 
 data Record = Record
-    { _rDeviceLastModifiedDate :: Maybe ISO8601
+    { _rDeviceLastModifiedDate :: Maybe POSIX
     , _rKey                    :: Maybe Text
     , _rLastModifiedBy         :: Maybe Text
-    , _rLastModifiedDate       :: Maybe ISO8601
+    , _rLastModifiedDate       :: Maybe POSIX
     , _rSyncCount              :: Maybe Integer
     , _rValue                  :: Maybe Text
     } deriving (Eq, Ord, Show)
@@ -443,7 +443,7 @@
     , _iuDatasetCount     :: Maybe Int
     , _iuIdentityId       :: Maybe Text
     , _iuIdentityPoolId   :: Maybe Text
-    , _iuLastModifiedDate :: Maybe ISO8601
+    , _iuLastModifiedDate :: Maybe POSIX
     } deriving (Eq, Ord, Show)
 
 -- | 'IdentityUsage' constructor.
@@ -513,7 +513,7 @@
         ]
 
 data RecordPatch = RecordPatch
-    { _rpDeviceLastModifiedDate :: Maybe ISO8601
+    { _rpDeviceLastModifiedDate :: Maybe POSIX
     , _rpKey                    :: Text
     , _rpOp                     :: Operation
     , _rpSyncCount              :: Integer