diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -176,3 +176,7 @@
 ## 0.14.3.0 -- 2020-11-10
 
 * Fourteenth version revised C. Fixed issue with the reverse order of the output for the rewritePoem executable.
+
+## 0.14.4.0 -- 2020-11-11
+
+* Fourteenth version revised D. Fixed issue with being not compiled on the GHC-7.8* series because of not importing mappend in the module header.
diff --git a/Lines/Main.hs b/Lines/Main.hs
--- a/Lines/Main.hs
+++ b/Lines/Main.hs
@@ -14,6 +14,7 @@
 
 module Main where
 
+import Data.Monoid (mappend)
 import Control.Parallel.Strategies
 import qualified Data.Vector as V
 import Data.List (sort)
@@ -29,6 +30,7 @@
 import Languages.UniquenessPeriods.Vector.AuxiliaryG
 import Data.Char (isDigit)
 import Languages.UniquenessPeriods.Vector.FuncRepRelated
+
 
 -- | The function allows to rewrite the Ukrainian text in the file given as the first command line argument to a new file. In between, it is rewritten
 -- so that every last word on the lines is preserved at its position, and the rest of the line is rearranged using the specified other command line
diff --git a/uniqueness-periods-vector-examples.cabal b/uniqueness-periods-vector-examples.cabal
--- a/uniqueness-periods-vector-examples.cabal
+++ b/uniqueness-periods-vector-examples.cabal
@@ -3,7 +3,7 @@
 -- http://haskell.org/cabal/users-guide/
 
 name:                uniqueness-periods-vector-examples
-version:             0.14.3.0
+version:             0.14.4.0
 synopsis:            Usage examples for the uniqueness-periods-vector series of packages
 description:         Usage examples for the uniqueness-periods-vector series of packages. Several executables are planned to demonstrate the libraries work.
 homepage:            https://hackage.haskell.org/package/uniqueness-periods-vector-examples