diff --git a/Changelog.md b/Changelog.md
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,8 @@
+### 1.2.3.1
+
+- Stick to the original polymorphic type signature of *voidHandler'* to avoid
+  breakage of existing dependent code.
+
 ### 1.2.3
 
 - Added a void service *voidService* which helps to load global data from Nginx
diff --git a/NgxExport/Tools/Combinators.hs b/NgxExport/Tools/Combinators.hs
--- a/NgxExport/Tools/Combinators.hs
+++ b/NgxExport/Tools/Combinators.hs
@@ -70,8 +70,8 @@
 
 -- | Runs an effectful computation and then returns an empty 'L.ByteString'.
 --
--- The same as 'voidHandler' except it accepts an additional boolean value
--- which is ignored. Implemented as
+-- The same as 'voidHandler' except it accepts an additional value which is
+-- ignored. Implemented as
 --
 -- @
 -- voidHandler' = const . 'voidHandler'
@@ -91,7 +91,7 @@
 --
 -- @since 1.2.1
 voidHandler' :: IO a                        -- ^ Target computation
-             -> Bool                        -- ^ Ignored boolean value
+             -> b                           -- ^ Ignored value
              -> IO L.ByteString
 voidHandler' = const . voidHandler
 
diff --git a/ngx-export-tools.cabal b/ngx-export-tools.cabal
--- a/ngx-export-tools.cabal
+++ b/ngx-export-tools.cabal
@@ -1,5 +1,5 @@
 name:                       ngx-export-tools
-version:                    1.2.3
+version:                    1.2.3.1
 synopsis:                   Extra tools for Nginx Haskell module
 description:                Extra tools for
         <https://github.com/lyokha/nginx-haskell-module Nginx Haskell module>.