diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -3,3 +3,7 @@
 ## 0.1.0.0 -- 2020-08-16
 
 * First version. Released on an unsuspecting world.
+
+## 0.2.0.0 -- 2020-08-18
+
+* Second version. Changed the boundaries for the dependency of mmsyn6ukr. Some documentation improvements.
diff --git a/String/Ukrainian/UniquenessPeriods.hs b/String/Ukrainian/UniquenessPeriods.hs
--- a/String/Ukrainian/UniquenessPeriods.hs
+++ b/String/Ukrainian/UniquenessPeriods.hs
@@ -6,7 +6,7 @@
 -- Maintainer  :  olexandr543@yahoo.com
 --
 -- Can be used to produce the 'uniquenessPeriods' function and related 
--- functionality.
+-- functionality for the Ukrainian text.
 
 module String.Ukrainian.UniquenessPeriods (
   -- * Auxiliary functions
@@ -46,8 +46,8 @@
 eqSnds xs ys | xs `elem` ["-","0","1"] || ys `elem` ["-","0","1"] = False
              | otherwise = xs == ys      
 
--- | The same as @show7s''@, but the second element in the resulting tuple is again the Ukrainian text with whitespaces (whitespaces are substituted
--- instead of punctuation symbols, too) and some phonetical conversions.
+-- | The same as @show7s''@ from MMSyn7s module (@mmsyn7s@ package), but the second element in the resulting tuple is again the Ukrainian text 
+-- with whitespaces (whitespaces are substituted instead of punctuation symbols, too) and some phonetical conversions.
 show7s''' :: [String] -> ([String],String)
 show7s''' zss =
   let (xss, yss) = splitAt 68 zss
@@ -58,7 +58,7 @@
 
 -- | Function 'show7s5' takes a Ukrainian text being a @String@ and returns a tuple, the first element of which is a list of Strings that correspond to the Ukrainian 
 -- sounds representations that (except pauses) are unique and are not repeated starting from the beginning of the given text (this list is filtered from 
--- the representations for the silence and then sorted in the ascending order), and the second one is a @String@ obtained from the remainder
+-- the representations for the silence), and the second one is a @String@ obtained from the remainder
 -- list of Strings starting from the first duplicated non-silent Ukrainian sound representation with whitespaces (whitespaces are substituted
 -- instead of punctiuation symbols, too) and some phonetical conversions. 
 show7s5 :: String -> ([String], String)
@@ -82,7 +82,7 @@
 show7snc :: [String] -> [Int]
 show7snc xss = let (tss,vss) = show7sn4' xss in if null vss then [length tss] else length tss:show7snc vss
                            
--- | The same as @show7sn'''@, but does not concatenate the list of 'String' as the second tuple's element.
+-- | The same as @show7sn'''@ from the MMSyn7s module from the @mmsyn7s@ package, but does not concatenate the list of 'String' as the second tuple's element.
 show7sn4' :: [String] -> ([String],[String])
 show7sn4' zss =
   let (xss, yss) = splitAt 68 zss
diff --git a/uniqueness-periods.cabal b/uniqueness-periods.cabal
--- a/uniqueness-periods.cabal
+++ b/uniqueness-periods.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                uniqueness-periods
-version:             0.1.0.0
+version:             0.2.0.0
 synopsis:            Can be used to produce the 'uniquenessPeriods' function and related functionality.
 -- description:
 homepage:            https://hackage.haskell.org/package/uniqueness-periods
@@ -20,6 +20,6 @@
   exposed-modules:     String.Ukrainian.UniquenessPeriods
   -- other-modules:
   -- other-extensions:
-  build-depends:       base >=4.7 && <4.15, vector >=0.11 && <0.15, mmsyn6ukr >=0.7 && <1
+  build-depends:       base >=4.7 && <4.15, vector >=0.11 && <0.15, mmsyn6ukr >=0.8 && <1
   -- hs-source-dirs:
   default-language:    Haskell2010