diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,3 +3,8 @@
 ## 0.1.0.0 -- 2020-12-31
 
 * First version. Released on an unsuspecting world.
+
+## 0.2.0.0 -- 2021-10-30
+
+* Second version. Switched to the Case.Hashable.Cuckoo.getBFstL' function and the cuckoo hashtables.
+Updated the dependencies boundaries.
diff --git a/Phonetic/Languages/Filters.hs b/Phonetic/Languages/Filters.hs
--- a/Phonetic/Languages/Filters.hs
+++ b/Phonetic/Languages/Filters.hs
@@ -26,8 +26,8 @@
 
 import Data.Filters.Basic
 import GHC.Arr
-import CaseBi.Arr
---import qualified Data.Vector as V
+import Case.Hashable.Cuckoo
+import Data.Hashable (Hashable(..))
 
 -- | Makes a complex interval-based transformation moving the value from its own interval to the corresponding by the list of tuples second element of the
 -- respective pair with the first element being the starting number of the interval (numeration of them begins at 1). The list argument must be sorted
@@ -36,7 +36,7 @@
 -- but they are not checked. For example, the first argument must be less than the second one; the fifth argument must be located between the first two ones;
 -- the third argument must be greater than zero.
 unsafeRearrangeIG
-  :: (RealFrac b, Integral c) => b
+  :: (RealFrac b, Integral c, Hashable c) => b
   -> b
   -> c
   -> [(c,c)]
@@ -50,7 +50,7 @@
 -- | An unzipped variant of the 'unsafeRearrangeIG' function where the list argument is internally 'zip'ped as the second argument with the @[1..n]@.
 -- This allows to shorten the time of the arguments writing.
 unsafeRearrangeIGV
-  :: (RealFrac b, Integral c) => b
+  :: (RealFrac b, Integral c, Hashable c) => b
   -> b
   -> c
   -> [c]
@@ -61,7 +61,7 @@
 
 -- | Swaps the k-th inner interval values with the maximum one's (that is the n-th one) values.
 unsafeSwapIWithMaxI
-  :: (RealFrac b, Integral c) => b
+  :: (RealFrac b, Integral c, Hashable c) => b
   -> b
   -> c -- ^ It is expected to be greater than 0, though this is not checked.
   -> c -- ^ It is expected to be less than the previous argument, but greater than 0, though this is not checked.
@@ -80,7 +80,7 @@
 -- (that is the n-th one) values. The list must be not empty and sorted in the ascending order, though it is not checked. Be aware that this can
 -- significantly change the density of the values and break some other properties for distributions.
 unsafeSwapVecIWithMaxI
-  :: (RealFrac b, Integral c) => b
+  :: (RealFrac b, Integral c, Hashable c) => b
   -> b
   -> c -- ^ It is expected to be greater than 0, though this is not checked.
   -> [c] -- ^ It is expected the list to be sorted in the ascending order (indices are counted in it starting with 1 opposed to the usual behaviour for lists and are the numbers of the intervals in the range from 1 to n), and besides all the elements to be less than the previous argument, greater than 0 and to be not pairwise equal, though it is not checked.
diff --git a/phonetic-languages-filters-array.cabal b/phonetic-languages-filters-array.cabal
--- a/phonetic-languages-filters-array.cabal
+++ b/phonetic-languages-filters-array.cabal
@@ -2,9 +2,9 @@
 --   For further documentation, see http://haskell.org/cabal/users-guide/
 
 name:                phonetic-languages-filters-array
-version:             0.1.0.0
+version:             0.2.0.0
 synopsis:            Allows to change the structure of the function output.
-description:         Allows to change the structure of the function output for the data types that have instances of the RealFrac class. Is rewritten from the predecessor uniqueness-periods-vector-filters package.
+description:         Allows to change the structure of the function output for the data types that have instances of the RealFrac class. Is rewritten from the predecessor uniqueness-periods-vector-filters package. Since the 0.2.0.0 version uses hashtables (because of using Case.Hashable.Cuckoo.getBFstL' function).
 homepage:            https://hackage.haskell.org/package/phonetic-languages-filters-array
 license:             MIT
 license-file:        LICENSE
@@ -20,6 +20,6 @@
   exposed-modules:     Phonetic.Languages.Filters
   -- other-modules:
   -- other-extensions:
-  build-depends:       base >=4.7 && <5, filters-basic >=0.1.1 && <1, mmsyn2-array >=0.1.1 && <1
+  build-depends:       base >=4.9 && <5, filters-basic >=0.1.1 && <1, mmsyn2-array >= 0.2.1.1 && <1, hashable >= 1.2.7 && <2
   -- hs-source-dirs:
   default-language:    Haskell2010