diff --git a/Aws/Aws.hs b/Aws/Aws.hs
--- a/Aws/Aws.hs
+++ b/Aws/Aws.hs
@@ -51,6 +51,7 @@
 import qualified Data.Text.Encoding           as T
 import qualified Data.Text.IO                 as T
 import qualified Network.HTTP.Conduit         as HTTP
+import qualified Network.HTTP.Client.TLS      as HTTP
 import           System.IO                    (stderr)
 import           Prelude
 
@@ -193,7 +194,7 @@
             -> r
             -> io (MemoryResponse a)
 simpleAws cfg scfg request = liftIO $ runResourceT $ do
-    manager <- liftIO $ HTTP.newManager HTTP.tlsManagerSettings
+    manager <- liftIO HTTP.getGlobalManager
     loadToMemory =<< readResponseIO =<< aws cfg scfg manager request
 
 -- | Run an AWS transaction, without enforcing that response and request type form a valid transaction pair.
diff --git a/Aws/Core.hs b/Aws/Core.hs
--- a/Aws/Core.hs
+++ b/Aws/Core.hs
@@ -134,6 +134,7 @@
 import           Data.Typeable
 import           Data.Word
 import qualified Network.HTTP.Conduit     as HTTP
+import qualified Network.HTTP.Client.TLS  as HTTP
 import qualified Network.HTTP.Types       as HTTP
 import           System.Directory
 import           System.Environment
@@ -326,7 +327,7 @@
 
 loadCredentialsFromInstanceMetadata :: MonadIO io => io (Maybe Credentials)
 loadCredentialsFromInstanceMetadata = do
-    mgr <- liftIO $ HTTP.newManager HTTP.tlsManagerSettings
+    mgr <- liftIO HTTP.getGlobalManager
     -- check if the path is routable
     avail <- liftIO $ hostAvailable "169.254.169.254"
     if not avail
diff --git a/Aws/S3/Core.hs b/Aws/S3/Core.hs
--- a/Aws/S3/Core.hs
+++ b/Aws/S3/Core.hs
@@ -483,13 +483,15 @@
 data UserInfo
     = UserInfo {
         userId          :: CanonicalUserId
-      , userDisplayName :: T.Text
+      , userDisplayName :: Maybe T.Text
       }
     deriving (Show)
 
 parseUserInfo :: MonadThrow m => Cu.Cursor -> m UserInfo
 parseUserInfo el = do id_ <- force "Missing user ID" $ el $/ elContent "ID"
-                      displayName <- force "Missing user DisplayName" $ el $/ elContent "DisplayName"
+                      displayName <- return $ case (el $/ elContent "DisplayName") of
+                                                  (x:_) -> Just x
+                                                  []    -> Nothing
                       return UserInfo { userId = id_, userDisplayName = displayName }
 
 data CannedAcl
diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+0.21 series
+-----------
+
+-   0.21
+    - S3: Make user DisplayName field optional (used in "GetBucket"
+      among other places)
+    - Use HTTP.getGlobalManager from http-client-tls by default (more
+      efficient, and we have a transitive dependency on the package
+      anyways)
+
 0.20 series
 -----------
 
diff --git a/aws.cabal b/aws.cabal
--- a/aws.cabal
+++ b/aws.cabal
@@ -1,5 +1,5 @@
 Name:                aws
-Version:             0.20
+Version:             0.21
 Synopsis:            Amazon Web Services (AWS) for Haskell
 Description:         Bindings for Amazon Web Services (AWS), with the aim of supporting all AWS services. To see a high level overview of the library, see the README at <https://github.com/aristidb/aws/blob/master/README.md>.
 Homepage:            http://github.com/aristidb/aws
@@ -19,7 +19,7 @@
 Source-repository this
   type: git
   location: https://github.com/aristidb/aws.git
-  tag: 0.20
+  tag: 0.21
 
 Source-repository head
   type: git
@@ -131,6 +131,7 @@
                        directory            >= 1.0     && < 2.0,
                        filepath             >= 1.1     && < 1.5,
                        http-conduit         >= 2.3     && < 2.4,
+                       http-client-tls      >= 0.3     && < 0.4,
                        http-types           >= 0.7     && < 1.0,
                        lifted-base          >= 0.1     && < 0.3,
                        memory,
diff --git a/tests/DynamoDb/Main.hs b/tests/DynamoDb/Main.hs
--- a/tests/DynamoDb/Main.hs
+++ b/tests/DynamoDb/Main.hs
@@ -79,7 +79,7 @@
     , "By running the tests in this test-suite costs for usage of AWS"
     , "services may incur."
     , ""
-    , "In order to actually excute the tests in this test-suite you must"
+    , "In order to actually execute the tests in this test-suite you must"
     , "provide the command line options:"
     , ""
     , "    --run-with-aws-credentials"