diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -197,6 +197,10 @@
 
 * Twelfth version revised E. Fixed issues with the wrong spelling of the word 'amplitude'. Fixed issues with deprecated documentation for Control.Exception.FinalException module.
 
-## 0.13.0.0 -- 2020-02-09
+## 0.13.0.0 -- 2020-02-08
 
-* Thirteenth version. Added a new module Paths_mmsyn7ukr and a data file "y.wav". Added a new command line argument possibility ("-t" as a first command line argument only plays a special 0.5 second sound file). Impoved formatting for the text displayed on the screen. Revised the documentation and removed the deprecated information from the README.markdown file.
+* Thirteenth version. Added a new module Paths_mmsyn7ukr and a data file "y.wav". Added a new command line argument possibility ("-t" as a first command line argument only plays a special 0.5 second sound file). Improved formatting for the text displayed on the screen. Revised the documentation and removed the deprecated information from the README.markdown file.
+
+## 0.13.0.1 -- 2020-02-08
+
+* Thirteenth version revised A. Fixed some issues with wrong calendar and spelling. 
diff --git a/Main.hs b/Main.hs
--- a/Main.hs
+++ b/Main.hs
@@ -39,7 +39,7 @@
        putStr "list-of-produced-sound-representations (if any) -- a list of sound representations, which the program will try to produce while being executed. "
        putStrLn "The default one (if not specified) is a full range of needed sound representations. "
     "-v" -> do
-       putStrLn "mmsyn7ukr version: 0.13.0.0"
+       putStrLn "mmsyn7ukr version: 0.13.0.1"
     "-t" -> do
        putStrLn "The program plays now a service sound for a 0.5 second. It uses just that duration for a pause before you can record a sound representation further."
        path0 <- getDataFileName "y.wav"
diff --git a/README.markdown b/README.markdown
--- a/README.markdown
+++ b/README.markdown
@@ -225,7 +225,7 @@
            ***** Test Sound Duration *****
            -------------------------------
            
-You can now can test the sound duration needed as a 0.5 second pause before
+You can now test the sound duration needed as a 0.5 second pause before
 the program can record every non-silent sound. This pause is caused not by the program
 itself, but by some sound recording equipment specific time needed to normalize
 the behaviour of the recording (it depends on your equipment, but for a wide range of
diff --git a/mmsyn7ukr.cabal b/mmsyn7ukr.cabal
--- a/mmsyn7ukr.cabal
+++ b/mmsyn7ukr.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                mmsyn7ukr
-version:             0.13.0.0
+version:             0.13.0.1
 synopsis:            A simple basic interface to some SoX functionality or to produce a voice that can be used by mmsyn7h
 description:         A program and a library that can be used as a simple basic interface to some SoX functionality or to produce your voice in Ukrainian (if you pronounce the sounds properly) represented by the separate sounds or something special like soft sign.
 homepage:            https://hackage.haskell.org/package/mmsyn7ukr