diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -98,3 +98,7 @@
 ## 0.9.0.0 -- 2020-10-08
 
 * Ninth version. Added new functions to evaluate syllables durations.
+
+## 0.9.1.0 -- 2020-10-09
+
+* Ninth version revised A. Added additionalF to the export in the module MMSyn7.Syllable.
diff --git a/MMSyn7/Syllable.hs b/MMSyn7/Syllable.hs
--- a/MMSyn7/Syllable.hs
+++ b/MMSyn7/Syllable.hs
@@ -36,6 +36,7 @@
   , uzpsToList
   , representProlonged
   , filterC
+  , additionalF
   -- ** Dealing with sound representation durations
   , str2Durat1
   -- ** Working more with UZP format
diff --git a/mmsyn7s.cabal b/mmsyn7s.cabal
--- a/mmsyn7s.cabal
+++ b/mmsyn7s.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                mmsyn7s
-version:             0.9.0.0
+version:             0.9.1.0
 synopsis:            Shows a sorted list of the Ukrainian sounds representations that can be used by mmsyn7 series of programs
 description:         A program and a library that show a sorted list of the Ukrainian sounds representations that can be used by mmsyn7 series of programs
 homepage:            https://hackage.haskell.org/package/mmsyn7s