diff --git a/json-feed.cabal b/json-feed.cabal
--- a/json-feed.cabal
+++ b/json-feed.cabal
@@ -1,16 +1,20 @@
-name: json-feed
-version: 0.0.0
-cabal-version: >=1.10
-build-type: Simple
-license: MIT
-license-file: LICENSE.markdown
-maintainer: Taylor Fausak
-homepage: https://github.com/tfausak/json-feed#readme
-bug-reports: https://github.com/tfausak/json-feed/issues
-synopsis: JSON Feed
-description:
-    This is an implementation of the JSON Feed spec in Haskell. The spec is available at <https://jsonfeed.org>. JSON Feed is similar to the Atom and RSS feed formats, but it is serialized as JSON rather than XML.
-category: Web
+-- This file has been generated from package.yaml by hpack version 0.17.0.
+--
+-- see: https://github.com/sol/hpack
+
+name:           json-feed
+version:        0.0.1
+synopsis:       JSON Feed
+description:    This is an implementation of the JSON Feed spec in Haskell. The spec is available at <https://jsonfeed.org>. JSON Feed is similar to the Atom and RSS feed formats, but it is serialized as JSON rather than XML.
+category:       Web
+homepage:       https://github.com/tfausak/json-feed#readme
+bug-reports:    https://github.com/tfausak/json-feed/issues
+maintainer:     Taylor Fausak
+license:        MIT
+license-file:   LICENSE.markdown
+build-type:     Simple
+cabal-version:  >= 1.10
+
 extra-source-files:
     feeds/allenpike.com.json
     feeds/daringfireball.net.json
@@ -25,40 +29,42 @@
     feeds/timetable.manton.org.json
 
 source-repository head
-    type: git
-    location: https://github.com/tfausak/json-feed
+  type: git
+  location: https://github.com/tfausak/json-feed
 
 library
-    exposed-modules:
-        JsonFeed
-    build-depends:
-        aeson >=1.0.2.1 && <1.1,
-        base >=4.9.1.0 && <4.10,
-        bytestring >=0.10.8.1 && <0.11,
-        mime-types >=0.1.0.7 && <0.2,
-        network-uri >=2.6.1.0 && <2.7,
-        tagsoup ==0.14.*,
-        text >=1.2.2.1 && <1.3,
-        time >=1.6.0.1 && <1.7
-    default-language: Haskell2010
-    hs-source-dirs: library
-    ghc-options: -Wall
+  hs-source-dirs:
+      library
+  ghc-options: -Wall
+  build-depends:
+      aeson
+    , base < 9
+    , bytestring
+    , mime-types
+    , network-uri
+    , tagsoup
+    , text
+    , time
+  exposed-modules:
+      JsonFeed
+  default-language: Haskell2010
 
 test-suite test
-    type: exitcode-stdio-1.0
-    main-is: test.hs
-    build-depends:
-        aeson >=1.0.2.1 && <1.1,
-        base >=4.9.1.0 && <4.10,
-        bytestring >=0.10.8.1 && <0.11,
-        mime-types >=0.1.0.7 && <0.2,
-        network-uri >=2.6.1.0 && <2.7,
-        tagsoup ==0.14.*,
-        text >=1.2.2.1 && <1.3,
-        time >=1.6.0.1 && <1.7,
-        filepath >=1.4.1.1 && <1.5,
-        hspec >=2.4.1 && <2.5,
-        json-feed >=0.0.0 && <0.1
-    default-language: Haskell2010
-    hs-source-dirs: tests
-    ghc-options: -Wall -rtsopts -threaded -with-rtsopts=-N
+  type: exitcode-stdio-1.0
+  main-is: test.hs
+  hs-source-dirs:
+      tests
+  ghc-options: -Wall -rtsopts -threaded -with-rtsopts=-N
+  build-depends:
+      aeson
+    , base < 9
+    , bytestring
+    , mime-types
+    , network-uri
+    , tagsoup
+    , text
+    , time
+    , filepath
+    , hspec
+    , json-feed
+  default-language: Haskell2010
diff --git a/library/JsonFeed.hs b/library/JsonFeed.hs
--- a/library/JsonFeed.hs
+++ b/library/JsonFeed.hs
@@ -3,6 +3,7 @@
 -- | <https://jsonfeed.org>
 module JsonFeed
   ( parseFeed
+  , renderFeed
   -- * Types
   , Feed (..)
   , Author (..)
@@ -15,7 +16,7 @@
   , Url (..)
   ) where
 
-import Data.Aeson (FromJSON, ToJSON)
+import Data.Aeson (FromJSON, ToJSON, Value)
 import Data.Aeson.Types (Options)
 import Data.ByteString.Lazy (ByteString)
 import Data.Text (Text)
@@ -39,6 +40,10 @@
 parseFeed = Json.eitherDecode
 
 
+renderFeed :: Feed -> ByteString
+renderFeed = Json.encode
+
+
 data Feed = Feed
   { feedAuthor :: Maybe Author
   -- ^ The feed author. The author object has several members. These are all
@@ -145,7 +150,7 @@
   -- that image wouldn't otherwise appear in the content_html. A feed reader
   -- with a detail view may choose to show this banner image at the top of the
   -- detail view, possibly with the title overlaid.
-  , itemContentHtml :: Maybe Text
+  , itemContentHtml :: Maybe Html
   -- ^ 'itemContentHtml' and 'itemContentText' are each optional strings ---
   -- but one or both must be present. This is the HTML or plain text of the
   -- item. Important: the only place HTML is allowed in this format is in
@@ -164,7 +169,7 @@
   -- ^ The URL of a page elsewhere. This is especially useful for linkblogs. If
   -- 'itemUrl' links to where you're talking about a thing, then
   -- 'itemExternalUrl' links to the thing you're talking about.
-  , itemId :: Json.Value
+  , itemId :: Value
   -- ^ Unique for the item in the feed over time. If an item is ever updated,
   -- the ID should be unchanged. New items should never use a previously-used
   -- ID. If an ID is presented as a number or other type, a JSON Feed reader