diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -86,3 +86,8 @@
 ## 0.5.0.0 -- 2020-10-29
 
 * Fifth version. Changed the inlining policies so that ghc -ddump-lint produces no warnings.
+
+## 0.5.1.0 -- 2022-03-20
+
+* Fifth version revised A. Updated the dependency boundaries by the application on GitHub.
+
diff --git a/mmsyn5.cabal b/mmsyn5.cabal
--- a/mmsyn5.cabal
+++ b/mmsyn5.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                mmsyn5
-version:             0.5.0.0
+version:             0.5.1.0
 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
@@ -20,6 +20,6 @@
   exposed-modules:     Data.List.InnToOut.Basic, Data.List.InnToOut.Unsafe
   -- other-modules:
   -- other-extensions:
-  build-depends:       base >=4.7 && <4.15
+  build-depends:       base >=4.7 && <5
   -- hs-source-dirs:   
   default-language:    Haskell2010