diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,3 +1,7 @@
+0.2.2.1
+-----
+* fixed comments data type names and modules/imports
+
 0.2.2
 -----
 * added cell comments support
diff --git a/src/Codec/Xlsx/Parser.hs b/src/Codec/Xlsx/Parser.hs
--- a/src/Codec/Xlsx/Parser.hs
+++ b/src/Codec/Xlsx/Parser.hs
@@ -31,6 +31,7 @@
 import           Codec.Xlsx.Types.Internal.Relationships     as Relationships
 import           Codec.Xlsx.Types.Internal.SharedStringTable
 import           Codec.Xlsx.Types.Internal.CustomProperties
+import           Codec.Xlsx.Types.Internal.CommentTable
 import           Codec.Xlsx.Types.Internal.CustomProperties  as CustomProperties
 
 
@@ -152,7 +153,7 @@
   Nothing  -> Styles L.empty
   Just xml -> Styles xml
 
-getComments :: Zip.Archive -> FilePath -> Maybe CommentsTable
+getComments :: Zip.Archive -> FilePath -> Maybe CommentTable
 getComments ar fp = listToMaybe =<< fromCursor <$> xmlCursor ar fp
 
 getCustomProperties :: Zip.Archive -> CustomProperties
diff --git a/src/Codec/Xlsx/Parser/Internal.hs b/src/Codec/Xlsx/Parser/Internal.hs
--- a/src/Codec/Xlsx/Parser/Internal.hs
+++ b/src/Codec/Xlsx/Parser/Internal.hs
@@ -24,7 +24,7 @@
 import qualified Data.Text as T
 import qualified Data.Text.Read as T
 import           Data.Typeable (Typeable)
-import           Data.XML.Types
+import           Text.XML
 import           Text.XML.Cursor
 
 #if !MIN_VERSION_base(4,8,0)
diff --git a/src/Codec/Xlsx/Types.hs b/src/Codec/Xlsx/Types.hs
--- a/src/Codec/Xlsx/Types.hs
+++ b/src/Codec/Xlsx/Types.hs
@@ -42,7 +42,7 @@
 import           Text.XML.Cursor
 
 import           Codec.Xlsx.Parser.Internal
-import           Codec.Xlsx.Types.Comments as X
+import           Codec.Xlsx.Types.Comment as X
 import           Codec.Xlsx.Types.Common as X
 import           Codec.Xlsx.Types.PageSetup as X
 import           Codec.Xlsx.Types.RichText as X
diff --git a/src/Codec/Xlsx/Types/Comment.hs b/src/Codec/Xlsx/Types/Comment.hs
new file mode 100644
--- /dev/null
+++ b/src/Codec/Xlsx/Types/Comment.hs
@@ -0,0 +1,21 @@
+module Codec.Xlsx.Types.Comment where
+
+import           Data.Text               (Text)
+
+import           Codec.Xlsx.Types.Common
+
+-- | User comment for a cell
+--
+-- TODO: the following child elements:
+-- * guid
+-- * shapeId
+-- * commentPr
+--
+-- Section 18.7.3 "comment (Comment)" (p. 1749)
+data Comment = Comment {
+    -- | cell comment text, maybe formatted
+    -- Section 18.7.7 "text (Comment Text)" (p. 1754)
+    _commentText     :: XlsxText
+    -- | comment author
+    , _commentAuthor :: Text }
+    deriving (Show, Eq)
diff --git a/src/Codec/Xlsx/Types/Comments.hs b/src/Codec/Xlsx/Types/Comments.hs
deleted file mode 100644
--- a/src/Codec/Xlsx/Types/Comments.hs
+++ /dev/null
@@ -1,85 +0,0 @@
-{-# LANGUAGE RecordWildCards #-}
-{-# LANGUAGE OverloadedStrings #-}
-module Codec.Xlsx.Types.Comments where
-
-import Data.List.Extra (nubOrd)
-import qualified Data.Map                   as Map
-import qualified Data.HashMap.Strict        as HM
-import           Data.Text                  (Text)
-import           Data.Text.Lazy (toStrict)
-import qualified Data.Text.Lazy.Builder  as B
-import qualified Data.Text.Lazy.Builder.Int as B
-import           Safe
-import           Text.XML
-import           Text.XML.Cursor
-
-import           Codec.Xlsx.Parser.Internal
-import           Codec.Xlsx.Types.Common
-import           Codec.Xlsx.Writer.Internal
-
-
--- | User comment for a cell
---
--- TODO: the following child elements:
--- * guid
--- * shapeId
--- * commentPr
---
--- Section 18.7.3 "comment (Comment)" (p. 1749)
-data Comment = Comment {
-    -- | cell comment text, maybe formatted
-    -- Section 18.7.7 "text (Comment Text)" (p. 1754)
-    _commentText   :: XlsxText
-    -- | comment author
-    , _commentAuthor :: Text }
-    deriving (Show, Eq)
-
-newtype CommentsTable = CommentsTable
-    { _commentsTable :: HM.HashMap CellRef Comment }
-    deriving (Show, Eq)
-
-fromList :: [(CellRef, Comment)] -> CommentsTable
-fromList = CommentsTable . HM.fromList
-
-lookupComment :: CellRef -> CommentsTable -> Maybe Comment
-lookupComment ref = HM.lookup ref . _commentsTable
-
-instance ToDocument CommentsTable where
-  toDocument = documentFromElement "Sheet comments generated by xlsx"
-             . toElement "comments"
-
-instance ToElement CommentsTable where
-  toElement nm (CommentsTable m) = Element
-      { elementName       = nm
-      , elementAttributes = Map.empty
-      , elementNodes      = [ NodeElement $ elementListSimple "authors" authorNodes
-                            , NodeElement . elementListSimple "commentList" $ map commentToEl (HM.toList m) ]
-      }
-    where
-      commentToEl (ref, Comment{..}) = Element
-          { elementName = "comment"
-          , elementAttributes = Map.fromList [ ("ref", ref)
-                                             , ("authorId", lookupAuthor _commentAuthor)]
-          , elementNodes      = [NodeElement $ toElement "text" _commentText]
-          }
-      lookupAuthor a = fromJustNote "author lookup" $ HM.lookup a authorIds
-      authorNames = nubOrd . map _commentAuthor $ HM.elems m
-      decimalToText :: Integer -> Text
-      decimalToText = toStrict . B.toLazyText . B.decimal
-      authorIds = HM.fromList $ zip authorNames (map decimalToText [0..])
-      authorNodes = map (elementContent "author") authorNames
-
-instance FromCursor CommentsTable where
-  fromCursor cur = do
-    let authorNames = cur $/ element (n"authors") &/ element (n"author") &/ content
-        authors = HM.fromList $ zip [0..] authorNames
-        items = cur $/ element (n"commentList") &/ element (n"comment") >=> parseComment authors
-    return . CommentsTable $ HM.fromList items
-
-parseComment :: HM.HashMap Int Text -> Cursor -> [(CellRef, Comment)]
-parseComment authors cur = do
-    ref <- cur $| attribute "ref"
-    txt <- cur $/ element (n"text") >=> fromCursor
-    authorId <- cur $| attribute "authorId" >=> decimal
-    let author = fromJustNote "authorId" $ HM.lookup authorId authors
-    return (ref, Comment txt author)
diff --git a/src/Codec/Xlsx/Types/Internal/CommentTable.hs b/src/Codec/Xlsx/Types/Internal/CommentTable.hs
new file mode 100644
--- /dev/null
+++ b/src/Codec/Xlsx/Types/Internal/CommentTable.hs
@@ -0,0 +1,69 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE RecordWildCards   #-}
+module Codec.Xlsx.Types.Internal.CommentTable where
+
+import qualified Data.HashMap.Strict        as HM
+import           Data.List.Extra            (nubOrd)
+import qualified Data.Map                   as Map
+import           Data.Text                  (Text)
+import           Data.Text.Lazy             (toStrict)
+import qualified Data.Text.Lazy.Builder     as B
+import qualified Data.Text.Lazy.Builder.Int as B
+import           Safe
+import           Text.XML
+import           Text.XML.Cursor
+
+import           Codec.Xlsx.Parser.Internal
+import           Codec.Xlsx.Types.Comment
+import           Codec.Xlsx.Types.Common
+import           Codec.Xlsx.Writer.Internal
+
+newtype CommentTable = CommentTable
+    { _commentsTable :: HM.HashMap CellRef Comment }
+    deriving (Show, Eq)
+
+fromList :: [(CellRef, Comment)] -> CommentTable
+fromList = CommentTable . HM.fromList
+
+lookupComment :: CellRef -> CommentTable -> Maybe Comment
+lookupComment ref = HM.lookup ref . _commentsTable
+
+instance ToDocument CommentTable where
+  toDocument = documentFromElement "Sheet comments generated by xlsx"
+             . toElement "comments"
+
+instance ToElement CommentTable where
+  toElement nm (CommentTable m) = Element
+      { elementName       = nm
+      , elementAttributes = Map.empty
+      , elementNodes      = [ NodeElement $ elementListSimple "authors" authorNodes
+                            , NodeElement . elementListSimple "commentList" $ map commentToEl (HM.toList m) ]
+      }
+    where
+      commentToEl (ref, Comment{..}) = Element
+          { elementName = "comment"
+          , elementAttributes = Map.fromList [ ("ref", ref)
+                                             , ("authorId", lookupAuthor _commentAuthor)]
+          , elementNodes      = [NodeElement $ toElement "text" _commentText]
+          }
+      lookupAuthor a = fromJustNote "author lookup" $ HM.lookup a authorIds
+      authorNames = nubOrd . map _commentAuthor $ HM.elems m
+      decimalToText :: Integer -> Text
+      decimalToText = toStrict . B.toLazyText . B.decimal
+      authorIds = HM.fromList $ zip authorNames (map decimalToText [0..])
+      authorNodes = map (elementContent "author") authorNames
+
+instance FromCursor CommentTable where
+  fromCursor cur = do
+    let authorNames = cur $/ element (n"authors") &/ element (n"author") &/ content
+        authors = HM.fromList $ zip [0..] authorNames
+        items = cur $/ element (n"commentList") &/ element (n"comment") >=> parseComment authors
+    return . CommentTable $ HM.fromList items
+
+parseComment :: HM.HashMap Int Text -> Cursor -> [(CellRef, Comment)]
+parseComment authors cur = do
+    ref <- cur $| attribute "ref"
+    txt <- cur $/ element (n"text") >=> fromCursor
+    authorId <- cur $| attribute "authorId" >=> decimal
+    let author = fromJustNote "authorId" $ HM.lookup authorId authors
+    return (ref, Comment txt author)
diff --git a/src/Codec/Xlsx/Writer.hs b/src/Codec/Xlsx/Writer.hs
--- a/src/Codec/Xlsx/Writer.hs
+++ b/src/Codec/Xlsx/Writer.hs
@@ -32,11 +32,10 @@
 #endif
 
 import           Codec.Xlsx.Types
-import qualified Codec.Xlsx.Types.Comments                   as Comments
-
+import qualified Codec.Xlsx.Types.Internal.CommentTable      as CommentTable
+import           Codec.Xlsx.Types.Internal.CustomProperties
 import           Codec.Xlsx.Types.Internal.Relationships     as Relationships hiding (lookup)
 import           Codec.Xlsx.Types.Internal.SharedStringTable
-import           Codec.Xlsx.Types.Internal.CustomProperties
 import           Codec.Xlsx.Writer.Internal
 
 -- | Writes `Xlsx' to raw data (lazy bytestring)
@@ -99,7 +98,7 @@
         "application/vnd.openxmlformats-officedocument.spreadsheetml.comments+xml"
         commentsBS
     commentsPath = "xl/comments" <> txti n <> ".xml"
-    commentsBS = renderLBS def . toDocument $ Comments.fromList comments
+    commentsBS = renderLBS def . toDocument $ CommentTable.fromList comments
     sheetRels = FileData ("xl/worksheets/_rels/sheet" <> txti n <> ".xml.rels")
         "application/vnd.openxmlformats-package.relationships+xml" sheetRelsXml
     sheetRelsXml = renderLBS def . toDocument $ Relationships.fromList
diff --git a/test/DataTest.hs b/test/DataTest.hs
--- a/test/DataTest.hs
+++ b/test/DataTest.hs
@@ -22,6 +22,7 @@
 import           Codec.Xlsx
 import           Codec.Xlsx.Parser.Internal
 import           Codec.Xlsx.Types.Internal.CustomProperties as CustomProperties
+import           Codec.Xlsx.Types.Internal.CommentTable
 import           Codec.Xlsx.Types.Internal.SharedStringTable
 
 
@@ -41,7 +42,7 @@
     , testCase "correct shared strings parsing even when one of the shared strings entry is just <t/>" $
         [testSharedStringTableWithEmpty] @=? testParsedSharedStringTablesWithEmpty
     , testCase "correct comments parsing" $
-        [testCommentsTable] @=? testParsedComments
+        [testCommentTable] @=? testParsedComments
     , testCase "correct custom properties parsing" $
         [testCustomProperties] @=? testParsedCustomProperties
     ]
@@ -141,7 +142,7 @@
 testParsedSharedStringTablesWithEmpty :: [SharedStringTable]
 testParsedSharedStringTablesWithEmpty = fromCursor . fromDocument $ parseLBS_ def testStringsWithEmpty
 
-testCommentsTable = CommentsTable $ HM.fromList
+testCommentTable = CommentTable $ HM.fromList
     [ ("D4", Comment (XlsxRichText rich) "Bob")
     , ("A2", Comment (XlsxText "Some comment here") "CBR") ]
   where
@@ -162,7 +163,7 @@
                           & runPropertiesSize ?~ 8.0
              , _richTextRunText = "Why such high expense?"}]
 
-testParsedComments ::[CommentsTable]
+testParsedComments ::[CommentTable]
 testParsedComments = fromCursor . fromDocument $ parseLBS_ def testComments
 
 testStrings :: ByteString
diff --git a/xlsx.cabal b/xlsx.cabal
--- a/xlsx.cabal
+++ b/xlsx.cabal
@@ -1,6 +1,6 @@
 Name:                xlsx
 
-Version:             0.2.2
+Version:             0.2.2.1
 
 Synopsis:            Simple and incomplete Excel file parser/writer
 Description:
@@ -34,9 +34,10 @@
   Hs-source-dirs:    src
   Exposed-modules:   Codec.Xlsx
                    , Codec.Xlsx.Types
-                   , Codec.Xlsx.Types.Comments
+                   , Codec.Xlsx.Types.Comment
                    , Codec.Xlsx.Types.Common
                    , Codec.Xlsx.Types.Internal
+                   , Codec.Xlsx.Types.Internal.CommentTable
                    , Codec.Xlsx.Types.Internal.CustomProperties
                    , Codec.Xlsx.Types.Internal.Relationships
                    , Codec.Xlsx.Types.Internal.SharedStringTable
@@ -58,7 +59,6 @@
                    , conduit      >= 1.0.0
                    , containers   >= 0.5.0.0
                    , data-default
-                   , digest       == 0.0.*
                    , extra
                    , filepath
                    , lens         >= 3.8 && < 5
@@ -70,10 +70,8 @@
                    , time         >= 1.4.0.1
                    , transformers >= 0.3.0.0
                    , unordered-containers
-                   , utf8-string  >= 0.3.7
                    , vector       >= 0.10
                    , xml-conduit  >= 1.1.0
-                   , xml-types    == 0.3.*
                    , zip-archive  >= 0.2
                    , zlib         >= 0.5.4.0
                    , base64-bytestring
