diff --git a/NgxExport.hs b/NgxExport.hs
--- a/NgxExport.hs
+++ b/NgxExport.hs
@@ -15,7 +15,8 @@
 --
 -----------------------------------------------------------------------------
 
-module NgxExport (module Foreign.C
+module NgxExport (Foreign.C.CInt (..)   -- for marshalling in foreign calls
+                 ,Foreign.C.CUInt (..)  -- for marshalling in foreign calls
                  ,ngxExportSS
                  ,ngxExportSSS
                  ,ngxExportSLS
diff --git a/ngx-export.cabal b/ngx-export.cabal
--- a/ngx-export.cabal
+++ b/ngx-export.cabal
@@ -1,5 +1,5 @@
 name:                ngx-export
-version:             0.2.4.0
+version:             0.2.4.1
 synopsis:            Helper module for Nginx haskell module
 description:         Helper module for
         <http://github.com/lyokha/nginx-haskell-module Nginx haskell module>
@@ -8,6 +8,7 @@
 license-file:        LICENSE
 author:              Alexey Radkov <alexey.radkov@gmail.com>
 maintainer:          Alexey Radkov <alexey.radkov@gmail.com>
+stability:           experimental
 copyright:           2016 Alexey Radkov
 category:            Unclassified
 build-type:          Simple