diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@
 
 ## Version
 
-`1.0.1`
+`1.1.0`
 
 
 ## Description
diff --git a/Setup.hs b/Setup.hs
--- a/Setup.hs
+++ b/Setup.hs
@@ -1,2 +1,2 @@
-import Distribution.Simple
+import           Distribution.Simple
 main = defaultMain
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:               1.0.1
+version:               1.1.0
 synopsis:              Amazon Lambda SDK.
 homepage:              https://github.com/brendanhay/amazonka
 license:               OtherLicense
@@ -74,7 +74,7 @@
         , Network.AWS.Lambda.Types.Sum
 
     build-depends:
-          amazonka-core == 1.0.1.*
+          amazonka-core == 1.1.0.*
         , base          >= 4.7     && < 5
 
 test-suite amazonka-lambda-test
@@ -93,9 +93,9 @@
         , Test.AWS.Lambda.Internal
 
     build-depends:
-          amazonka-core == 1.0.1
-        , amazonka-test == 1.0.1
-        , amazonka-lambda == 1.0.1
+          amazonka-core == 1.1.0
+        , amazonka-test == 1.1.0
+        , amazonka-lambda == 1.1.0
         , base
         , bytestring
         , lens
diff --git a/gen/Network/AWS/Lambda/Invoke.hs b/gen/Network/AWS/Lambda/Invoke.hs
--- a/gen/Network/AWS/Lambda/Invoke.hs
+++ b/gen/Network/AWS/Lambda/Invoke.hs
@@ -98,6 +98,12 @@
 iInvocationType = lens _iInvocationType (\ s a -> s{_iInvocationType = a});
 
 -- | JSON that you want to provide to your Lambda function as input.
+--
+-- /Note:/ This 'Lens' automatically encodes and decodes Base64 data,
+-- despite what the AWS documentation might say.
+-- The underlying isomorphism will encode to Base64 representation during
+-- serialisation, and decode from Base64 representation during deserialisation.
+-- This 'Lens' accepts and returns only raw unencoded data.
 iPayload :: Lens' Invoke (Maybe ByteString)
 iPayload = lens _iPayload (\ s a -> s{_iPayload = a}) . mapping _Base64;
 
@@ -221,6 +227,12 @@
 -- describing the error. For the 'Handled' errors the Lambda function will
 -- report this message. For 'Unhandled' errors AWS Lambda reports the
 -- message.
+--
+-- /Note:/ This 'Lens' automatically encodes and decodes Base64 data,
+-- despite what the AWS documentation might say.
+-- The underlying isomorphism will encode to Base64 representation during
+-- serialisation, and decode from Base64 representation during deserialisation.
+-- This 'Lens' accepts and returns only raw unencoded data.
 irsPayload :: Lens' InvokeResponse (Maybe ByteString)
 irsPayload = lens _irsPayload (\ s a -> s{_irsPayload = a}) . mapping _Base64;
 
diff --git a/gen/Network/AWS/Lambda/Types/Product.hs b/gen/Network/AWS/Lambda/Types/Product.hs
--- a/gen/Network/AWS/Lambda/Types/Product.hs
+++ b/gen/Network/AWS/Lambda/Types/Product.hs
@@ -168,6 +168,12 @@
 -- information about creating a .zip file, go to
 -- <http://docs.aws.amazon.com/lambda/latest/dg/intro-permission-model.html#lambda-intro-execution-role.html Execution Permissions>
 -- in the /AWS Lambda Developer Guide/.
+--
+-- /Note:/ This 'Lens' automatically encodes and decodes Base64 data,
+-- despite what the AWS documentation might say.
+-- The underlying isomorphism will encode to Base64 representation during
+-- serialisation, and decode from Base64 representation during deserialisation.
+-- This 'Lens' accepts and returns only raw unencoded data.
 fcZipFile :: Lens' FunctionCode (Maybe ByteString)
 fcZipFile = lens _fcZipFile (\ s a -> s{_fcZipFile = a}) . mapping _Base64;
 
diff --git a/gen/Network/AWS/Lambda/UpdateFunctionCode.hs b/gen/Network/AWS/Lambda/UpdateFunctionCode.hs
--- a/gen/Network/AWS/Lambda/UpdateFunctionCode.hs
+++ b/gen/Network/AWS/Lambda/UpdateFunctionCode.hs
@@ -105,6 +105,12 @@
 uS3Key = lens _uS3Key (\ s a -> s{_uS3Key = a});
 
 -- | Based64-encoded .zip file containing your packaged source code.
+--
+-- /Note:/ This 'Lens' automatically encodes and decodes Base64 data,
+-- despite what the AWS documentation might say.
+-- The underlying isomorphism will encode to Base64 representation during
+-- serialisation, and decode from Base64 representation during deserialisation.
+-- This 'Lens' accepts and returns only raw unencoded data.
 uZipFile :: Lens' UpdateFunctionCode (Maybe ByteString)
 uZipFile = lens _uZipFile (\ s a -> s{_uZipFile = a}) . mapping _Base64;