diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -91,3 +91,7 @@
 
 * Fifth version revised A. Updated the dependency boundaries by the application on GitHub.
 
+## 0.6.0.0 -- 2023-02-01
+
+* Sixth version. Switched to NoImplicitPrelude extension. Updated the dependency boundaries.
+
diff --git a/Data/List/InnToOut/Basic.hs b/Data/List/InnToOut/Basic.hs
--- a/Data/List/InnToOut/Basic.hs
+++ b/Data/List/InnToOut/Basic.hs
@@ -1,18 +1,24 @@
 -- |
 -- Module      :  Data.List.InnToOut.Basic
--- Copyright   :  (c) OleksandrZhabenko 2019-2020
+-- Copyright   :  (c) Oleksandr Zhabenko 2019-2023
 -- License     :  MIT
--- Maintainer  :  olexandr543@yahoo.com
+-- Maintainer  :  oleksandr.zhabenko@yahoo.com
 --
 -- Various additional operations on lists
 --
 
+{-# LANGUAGE NoImplicitPrelude #-}
+{-# OPTIONS_HADDOCK -show-extensions #-}
+
 module Data.List.InnToOut.Basic 
   (
     -- * Operations to apply a function or two different functions to an element of the outer list (some of them create inner list)  
        mapI
        , mapI2
   ) where
+
+import GHC.Base
+import GHC.List (concatMap)
 
 -- | Function that applies additional function @f :: a -> [a]@ to @a@ if @p :: a -> Bool@ and @p a = True@
 mapI :: (a -> Bool) -> (a -> [a]) -> [a] -> [a]
diff --git a/Data/List/InnToOut/Unsafe.hs b/Data/List/InnToOut/Unsafe.hs
--- a/Data/List/InnToOut/Unsafe.hs
+++ b/Data/List/InnToOut/Unsafe.hs
@@ -1,12 +1,14 @@
 -- |
 -- Module      :  Data.List.InnToOut.Unsafe
--- Copyright   :  (c) OleksandrZhabenko 2019-2020
+-- Copyright   :  (c) OleksandrZhabenko 2019-2023
 -- License     :  MIT
--- Maintainer  :  olexandr543@yahoo.com
+-- Maintainer  :  oleksandr.zhabenko@yahoo.com
 --
 -- Various additional operations on lists that have additional intermediate Monads inside. 
 -- Like the 'unsafePerformIO' function they can have unpredictable behaviour. Use them ONLY if you surely know what you are doing.
 --
+{-# LANGUAGE NoImplicitPrelude #-}
+{-# OPTIONS_HADDOCK -show-extensions #-}
 
 module Data.List.InnToOut.Unsafe 
   (
@@ -17,6 +19,9 @@
        ,unsafeMapI12M
        ,unsafeMapI2M1
   ) where
+
+import GHC.Base
+import GHC.List (concatMap)
 
 -- | Unsafe function in which the second intermediate result @c@ is in the @Monad m@. It appears if the predicate @p :: a -> Bool@ is @False@ on @a@.
 -- It can have unpredictable behaviour. Use it ONLY if you surely know what you are doing. It's your responsibility to check whether 
diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2019-2020 OleksandrZhabenko
+Copyright (c) 2019-2023 Oleksandr Zhabenko
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
diff --git a/mmsyn5.cabal b/mmsyn5.cabal
--- a/mmsyn5.cabal
+++ b/mmsyn5.cabal
@@ -2,15 +2,15 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                mmsyn5
-version:             0.5.1.0
+version:             0.6.0.0
 synopsis:            Various additional operations on lists (some with intermediate Monads)
 description:         A small library to deal with a little bit more complex operations on lists than Data.List module
 homepage:            https://hackage.haskell.org/package/mmsyn5
 license:             MIT
 license-file:        LICENSE
 author:              OleksandrZhabenko
-maintainer:          olexandr543@yahoo.com
--- copyright:
+maintainer:          oleksandr.zhabenko@yahoo.com
+copyright:           Oleksandr Zhabenko
 category:            Data
 build-type:          Simple
 extra-source-files:  ChangeLog.md, Setup.hs, README.markdown
@@ -19,7 +19,7 @@
 library
   exposed-modules:     Data.List.InnToOut.Basic, Data.List.InnToOut.Unsafe
   -- other-modules:
-  -- other-extensions:
-  build-depends:       base >=4.7 && <5
+  other-extensions:    NoImplicitPrelude
+  build-depends:       base >=4.13 && <5
   -- hs-source-dirs:   
   default-language:    Haskell2010