diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -41,3 +41,8 @@
 ## 0.6.1.0 -- 2021-09-09
 
 * Sixth version revised A. Fixed issue with language pragma of BangPatterns extension.
+
+## 0.7.0.0 -- 2021-10-30
+
+* Seventh version. Switched to the Case.Hashable.Cuckoo.getBFstL' function where possible. Updated the 
+dependencies appropriately.
diff --git a/Phonetic/Languages/Ukrainian/PrepareText.hs b/Phonetic/Languages/Ukrainian/PrepareText.hs
--- a/Phonetic/Languages/Ukrainian/PrepareText.hs
+++ b/Phonetic/Languages/Ukrainian/PrepareText.hs
@@ -44,7 +44,7 @@
   , aux4
 ) where
 
-import CaseBi.Arr (getBFstL')
+import Case.Hashable.Cuckoo (getBFstL')
 import Data.List.InnToOut.Basic (mapI)
 import Data.Char (isAlpha,toLower)
 import GHC.Arr
diff --git a/Ukrainian/ReverseConcatenations.hs b/Ukrainian/ReverseConcatenations.hs
--- a/Ukrainian/ReverseConcatenations.hs
+++ b/Ukrainian/ReverseConcatenations.hs
@@ -21,7 +21,7 @@
 #endif
 #endif
 import Data.List (sort,isPrefixOf)
-import CaseBi.Arr (getBFstL')
+import Case.Hashable.Cuckoo (getBFstL')
 import Data.List.InnToOut.Basic (mapI)
 #ifdef __GLASGOW_HASKELL__
 #if __GLASGOW_HASKELL__==708
diff --git a/phonetic-languages-ukrainian-array.cabal b/phonetic-languages-ukrainian-array.cabal
--- a/phonetic-languages-ukrainian-array.cabal
+++ b/phonetic-languages-ukrainian-array.cabal
@@ -2,7 +2,7 @@
 --  further documentation, see http://haskell.org/cabal/users-guide/
 
 name:                phonetic-languages-ukrainian-array
-version:             0.6.1.0
+version:             0.7.0.0
 synopsis:            Prepares Ukrainian text to be used as a phonetic language text
 description:         Applies needed minimal grammar connections so that the text afterwards can be processed by dobutokO-poetry or phonetic languages approach related programs. Uses arrays instead of vectors. Besides can be used to reverse many of the done concatenations.
 homepage:            https://hackage.haskell.org/package/phonetic-languages-ukrainian-array
@@ -20,7 +20,7 @@
   exposed-modules:     Phonetic.Languages.Ukrainian.PrepareText, Ukrainian.ReverseConcatenations
   -- other-modules:
   other-extensions:    CPP, BangPatterns
-  build-depends:       base >=4.7 && <4.16, mmsyn2-array >=0.1.3 && <1, mmsyn5 >=0.5 && <1
+  build-depends:       base >=4.9 && <4.16, mmsyn2-array >=0.2.1.1 && <1, mmsyn5 >=0.5 && <1, hashable >= 1.2.7 && <2
   -- hs-source-dirs:
   default-language:    Haskell2010
 
@@ -28,7 +28,7 @@
   main-is:             Main.hs
   other-modules:       Ukrainian.ReverseConcatenations
   other-extensions:    CPP, BangPatterns
-  build-depends:       base >=4.7 && <4.16, mmsyn2-array >= 0.1.3 && <1, mmsyn5 >=0.5 && <1
+  build-depends:       base >=4.9 && <4.16, mmsyn2-array >= 0.2.1.1 && <1, mmsyn5 >=0.5 && <1, hashable >= 1.2.7 && <2
   ghc-options:         -threaded -rtsopts
   hs-source-dirs:      ., Ukrainian
   default-language:    Haskell2010