diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,10 +1,18 @@
+## Upcoming
+
+## 2.11.1
+
+* Use explicit imports for mtl, avoids the mtl-2.3 issue
+* Added `minlength` attribute.
+* Added `loading` attribute.
+
 ## 2.11.0
 
 * Change internal attributes to `Seq Attribute`. This preserves
   ordering. Attributes are merged in a left-biased way, preserving the
   key order as first encountered.
 
-## 2.9.13
+## 2.10.0
 
 * Change internal attributes representation from HashMap to Map. This
   introduces stable ordering, at a negligible performance cost for
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -3,9 +3,12 @@
 
 Clear to write, read and edit DSL for writing HTML
 
-[Documentation](http://chrisdone.github.io/lucid/)
+**Table of Contents**
 
-[lucid-from-html](https://github.com/dbaynard/lucid-from-html) will convert html to the `lucid` DSL, though it is experimental.
+- [Introduction](#introduction)
+- [Rendering](#rendering)
+- [Good to know](#good-to-know)
+- [Transforming](#transforming)
 
 ## Introduction
 
@@ -119,6 +122,11 @@
 
 See the documentation for the `Lucid` module for information about
 using it as a monad transformer.
+
+## Good to know
+
+* Attributes are escaped, so you cannot write arbitrary JavaScript in attributes. Instead, do something like `onclick_ "foo()"`.
+* Attributes are rendered in the order that they are written in your Haskell code.
 
 ## Transforming
 
diff --git a/lucid.cabal b/lucid.cabal
--- a/lucid.cabal
+++ b/lucid.cabal
@@ -1,5 +1,5 @@
 name:                lucid
-version:             2.11.0
+version:             2.11.1
 synopsis:            Clear to write, read and edit DSL for HTML
 description:
   Clear to write, read and edit DSL for HTML.
@@ -15,13 +15,13 @@
 license:             BSD3
 license-file:        LICENSE
 author:              Chris Done
-maintainer:          chrisdone@gmail.com, oleg.grenrus@iki.fi
-copyright:           2014-2017 Chris Done
+maintainer:          chrisdone@gmail.com
+copyright:           2014-2021 Chris Done
 category:            Web
 build-type:          Simple
 cabal-version:       >=1.10
 extra-source-files:  README.md, CHANGELOG.md
-tested-with:         GHC==7.10.3,GHC==8.0.2,GHC==8.2.2,GHC==8.4.4,GHC==8.6.5,GHC==8.8.4,GHC==8.10.4,GHC==9.0.1
+tested-with:         GHC==7.10.3,GHC==8.0.2,GHC==8.2.2,GHC==8.4.4,GHC==8.6.5,GHC==8.8.4,GHC==8.10.7,GHC==9.0.1,GHC==9.2.1
 
 library
   default-language:  Haskell2010
@@ -33,7 +33,7 @@
                      Lucid.Bootstrap
 
   -- GHC boot libraries
-  build-depends:     base                   >=4.8      && <4.16
+  build-depends:     base                   >=4.8      && <4.17
                    , bytestring             >=0.10.6.0
                    , containers             >=0.5.6.2
                    , transformers           >=0.4.2.0
@@ -50,7 +50,6 @@
   build-depends:     blaze-builder         >=0.4.0.0
                    , hashable              >=1.2.3.2
                    , mmorph                >=1.0.3
-                   , unordered-containers  >=0.2.5.1
 
 source-repository head
   type:     git
diff --git a/src/Lucid/Base.hs b/src/Lucid/Base.hs
--- a/src/Lucid/Base.hs
+++ b/src/Lucid/Base.hs
@@ -45,8 +45,11 @@
 import qualified Blaze.ByteString.Builder.Html.Utf8 as Blaze
 import           Control.Applicative
 import           Control.Monad
-import           Control.Monad.Morph
-import           Control.Monad.Reader
+import           Control.Monad.Morph (MFunctor(..))
+import           Control.Monad.Reader (MonadReader(..))
+import           Control.Monad.IO.Class (MonadIO(..))
+import           Control.Monad.Fix (MonadFix(..))
+import           Control.Monad.Trans (MonadTrans(..))
 import           Control.Monad.Error.Class (MonadError(..))
 import           Control.Monad.State.Class (MonadState(..))
 import           Control.Monad.Writer.Class (MonadWriter(..))
diff --git a/src/Lucid/Html5.hs b/src/Lucid/Html5.hs
--- a/src/Lucid/Html5.hs
+++ b/src/Lucid/Html5.hs
@@ -679,6 +679,10 @@
 list_ :: Text -> Attribute
 list_ = makeAttribute "list"
 
+-- | The @loading@ attribute.
+loading_ :: Text -> Attribute
+loading_ = makeAttribute "loading"
+
 -- | The @loop@ attribute.
 loop_ :: Text -> Attribute
 loop_ = makeAttribute "loop"
@@ -711,6 +715,10 @@
 min_ :: Text -> Attribute
 min_ = makeAttribute "min"
 
+-- | The @minlength@ attribute.
+minlength_ :: Text -> Attribute
+minlength_ = makeAttribute "minlength"
+
 -- | The @multiple@ attribute.
 multiple_ :: Text -> Attribute
 multiple_ = makeAttribute "multiple"
@@ -998,6 +1006,10 @@
 -- | The @placeholder@ attribute.
 placeholder_ :: Text -> Attribute
 placeholder_ = makeAttribute "placeholder"
+
+-- | The @poster@ attribute.
+poster_ :: Text -> Attribute
+poster_ = makeAttribute "poster"
 
 -- | The @preload@ attribute.
 preload_ :: Text -> Attribute