diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,3 +12,7 @@
 ## 0.2.1.0 -- 2020-06-24
 
 * Second version revised A. Fixed typos mistake in code that do not allow it to be compiled.
+
+## 0.3.0.0 -- 2020-08-16
+
+* Third version. Changed the dependencies boundaries.
diff --git a/dobutokO3.cabal b/dobutokO3.cabal
--- a/dobutokO3.cabal
+++ b/dobutokO3.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                dobutokO3
-version:             0.2.1.0
+version:             0.3.0.0
 synopsis:            Helps to create more complex experimental music from a file (especially timbre).
 description:         Uses SoX inside.
 homepage:            https://hackage.haskell.org/package/dobutokO3
@@ -20,6 +20,6 @@
   exposed-modules:     DobutokO.Sound.Complex
   -- other-modules:
   -- other-extensions:
-  build-depends:       base >=4.7 && <4.15, bytestring >= 0.10.6 && <1, vector >=0.11 && <0.14, process >=1.4 && <1.9, mmsyn3 >=0.1.5 && <1, mmsyn7s >=0.7 && <1, directory >=1.2.7 && <1.7, mmsyn7ukr >=0.16 && <1, mmsyn2 >=0.1.8 && <1, mmsyn6ukr >=0.7.2 && <1, mmsyn7l >=0.7 && <1, dobutokO2 >=0.42 && <1
+  build-depends:       base >=4.7 && <4.15, bytestring >= 0.10.6 && <1, vector >=0.11 && <0.14, process >=1.4 && <1.9, mmsyn3 >=0.1.5 && <1, mmsyn7s >=0.8 && <1, directory >=1.2.7 && <1.7, mmsyn7ukr >=0.16 && <1, mmsyn2 >=0.1.8 && <1, mmsyn6ukr >=0.8 && <1, mmsyn7l >=0.8 && <1, dobutokO2 >=0.43 && <1
   -- hs-source-dirs:
   default-language:    Haskell2010