diff --git a/amazonka-lambda.cabal b/amazonka-lambda.cabal
--- a/amazonka-lambda.cabal
+++ b/amazonka-lambda.cabal
@@ -1,5 +1,5 @@
 name:                  amazonka-lambda
-version:               0.1.1
+version:               0.1.2
 synopsis:              Amazon Lambda SDK.
 homepage:              https://github.com/brendanhay/amazonka
 license:               OtherLicense
@@ -59,5 +59,5 @@
     other-modules:
 
     build-depends:
-          amazonka-core == 0.1.1.*
+          amazonka-core == 0.1.2.*
         , base          >= 4.7     && < 5
diff --git a/gen/Network/AWS/Lambda/AddEventSource.hs b/gen/Network/AWS/Lambda/AddEventSource.hs
--- a/gen/Network/AWS/Lambda/AddEventSource.hs
+++ b/gen/Network/AWS/Lambda/AddEventSource.hs
@@ -139,7 +139,7 @@
     , _aesrEventSource  :: Maybe Text
     , _aesrFunctionName :: Maybe Text
     , _aesrIsActive     :: Maybe Bool
-    , _aesrLastModified :: Maybe ISO8601
+    , _aesrLastModified :: Maybe POSIX
     , _aesrParameters   :: Map Text Text
     , _aesrRole         :: Maybe Text
     , _aesrStatus       :: Maybe Text
diff --git a/gen/Network/AWS/Lambda/GetEventSource.hs b/gen/Network/AWS/Lambda/GetEventSource.hs
--- a/gen/Network/AWS/Lambda/GetEventSource.hs
+++ b/gen/Network/AWS/Lambda/GetEventSource.hs
@@ -82,7 +82,7 @@
     , _gesrEventSource  :: Maybe Text
     , _gesrFunctionName :: Maybe Text
     , _gesrIsActive     :: Maybe Bool
-    , _gesrLastModified :: Maybe ISO8601
+    , _gesrLastModified :: Maybe POSIX
     , _gesrParameters   :: Map Text Text
     , _gesrRole         :: Maybe Text
     , _gesrStatus       :: Maybe Text
diff --git a/gen/Network/AWS/Lambda/GetFunctionConfiguration.hs b/gen/Network/AWS/Lambda/GetFunctionConfiguration.hs
--- a/gen/Network/AWS/Lambda/GetFunctionConfiguration.hs
+++ b/gen/Network/AWS/Lambda/GetFunctionConfiguration.hs
@@ -90,7 +90,7 @@
     , _gfcrFunctionARN     :: Maybe Text
     , _gfcrFunctionName    :: Maybe Text
     , _gfcrHandler         :: Maybe Text
-    , _gfcrLastModified    :: Maybe ISO8601
+    , _gfcrLastModified    :: Maybe POSIX
     , _gfcrMemorySize      :: Maybe Nat
     , _gfcrMode            :: Maybe Mode
     , _gfcrRole            :: Maybe Text
diff --git a/gen/Network/AWS/Lambda/Types.hs b/gen/Network/AWS/Lambda/Types.hs
--- a/gen/Network/AWS/Lambda/Types.hs
+++ b/gen/Network/AWS/Lambda/Types.hs
@@ -214,7 +214,7 @@
     , _fcFunctionARN     :: Maybe Text
     , _fcFunctionName    :: Maybe Text
     , _fcHandler         :: Maybe Text
-    , _fcLastModified    :: Maybe ISO8601
+    , _fcLastModified    :: Maybe POSIX
     , _fcMemorySize      :: Maybe Nat
     , _fcMode            :: Maybe Mode
     , _fcRole            :: Maybe Text
@@ -357,7 +357,7 @@
     , _escEventSource  :: Maybe Text
     , _escFunctionName :: Maybe Text
     , _escIsActive     :: Maybe Bool
-    , _escLastModified :: Maybe ISO8601
+    , _escLastModified :: Maybe POSIX
     , _escParameters   :: Map Text Text
     , _escRole         :: Maybe Text
     , _escStatus       :: Maybe Text
diff --git a/gen/Network/AWS/Lambda/UpdateFunctionConfiguration.hs b/gen/Network/AWS/Lambda/UpdateFunctionConfiguration.hs
--- a/gen/Network/AWS/Lambda/UpdateFunctionConfiguration.hs
+++ b/gen/Network/AWS/Lambda/UpdateFunctionConfiguration.hs
@@ -145,7 +145,7 @@
     , _ufcrFunctionARN     :: Maybe Text
     , _ufcrFunctionName    :: Maybe Text
     , _ufcrHandler         :: Maybe Text
-    , _ufcrLastModified    :: Maybe ISO8601
+    , _ufcrLastModified    :: Maybe POSIX
     , _ufcrMemorySize      :: Maybe Nat
     , _ufcrMode            :: Maybe Mode
     , _ufcrRole            :: Maybe Text
diff --git a/gen/Network/AWS/Lambda/UploadFunction.hs b/gen/Network/AWS/Lambda/UploadFunction.hs
--- a/gen/Network/AWS/Lambda/UploadFunction.hs
+++ b/gen/Network/AWS/Lambda/UploadFunction.hs
@@ -184,7 +184,7 @@
     , _ufrFunctionARN     :: Maybe Text
     , _ufrFunctionName    :: Maybe Text
     , _ufrHandler         :: Maybe Text
-    , _ufrLastModified    :: Maybe ISO8601
+    , _ufrLastModified    :: Maybe POSIX
     , _ufrMemorySize      :: Maybe Nat
     , _ufrMode            :: Maybe Mode
     , _ufrRole            :: Maybe Text