diff --git a/Changelog.md b/Changelog.md
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,7 @@
+### 1.4.1
+
+- Corrected type of *ngxCachedTimePtr*.
+
 ### 1.4.0
 
 - Added a number of opaque pointers to Nginx global objects for using them in
diff --git a/NgxExport.hs b/NgxExport.hs
--- a/NgxExport.hs
+++ b/NgxExport.hs
@@ -19,7 +19,7 @@
 module NgxExport (
     -- * Type declarations
                   ContentHandlerResult
-                 ,UnsafeContentHandlerResult 
+                 ,UnsafeContentHandlerResult
     -- * Exporters
                  ,ngxExportSS
                  ,ngxExportSSS
@@ -170,8 +170,12 @@
 ngxExportC = ngxExport' $ infixE (Just $ varE 'const) (varE '(.)) . Just . varE
 
 -- | Exports a function of type
--- /'String' -> 'String'/
--- for using in directive /haskell_run/.
+--
+-- @
+-- 'String' -> 'String'
+-- @
+--
+-- for using in directive __/haskell_run/__.
 ngxExportSS :: Name -> Q [Dec]
 ngxExportSS =
     ngxExport 'SS 'sS
@@ -179,8 +183,12 @@
        Ptr CString -> Ptr CInt -> IO CUInt|]
 
 -- | Exports a function of type
--- /'String' -> 'String' -> 'String'/
--- for using in directive /haskell_run/.
+--
+-- @
+-- 'String' -> 'String' -> 'String'
+-- @
+--
+-- for using in directive __/haskell_run/__.
 ngxExportSSS :: Name -> Q [Dec]
 ngxExportSSS =
     ngxExport 'SSS 'sSS
@@ -188,8 +196,12 @@
        Ptr CString -> Ptr CInt -> IO CUInt|]
 
 -- | Exports a function of type
--- /['String'] -> 'String'/
--- for using in directive /haskell_run/.
+--
+-- @
+-- ['String'] -> 'String'
+-- @
+--
+-- for using in directive __/haskell_run/__.
 ngxExportSLS :: Name -> Q [Dec]
 ngxExportSLS =
     ngxExport 'SLS 'sLS
@@ -197,8 +209,12 @@
        Ptr CString -> Ptr CInt -> IO CUInt|]
 
 -- | Exports a function of type
--- /'String' -> 'Bool'/
--- for using in directive /haskell_run/.
+--
+-- @
+-- 'String' -> 'Bool'
+-- @
+--
+-- for using in directive __/haskell_run/__.
 ngxExportBS :: Name -> Q [Dec]
 ngxExportBS =
     ngxExport 'BS 'bS
@@ -206,8 +222,12 @@
        Ptr CString -> Ptr CInt -> IO CUInt|]
 
 -- | Exports a function of type
--- /'String' -> 'String' -> 'Bool'/
--- for using in directive /haskell_run/.
+--
+-- @
+-- 'String' -> 'String' -> 'Bool'
+-- @
+--
+-- for using in directive __/haskell_run/__.
 ngxExportBSS :: Name -> Q [Dec]
 ngxExportBSS =
     ngxExport 'BSS 'bSS
@@ -215,8 +235,12 @@
        Ptr CString -> Ptr CInt -> IO CUInt|]
 
 -- | Exports a function of type
--- /['String'] -> 'Bool'/
--- for using in directive /haskell_run/.
+--
+-- @
+-- ['String'] -> 'Bool'
+-- @
+--
+-- for using in directive __/haskell_run/__.
 ngxExportBLS :: Name -> Q [Dec]
 ngxExportBLS =
     ngxExport 'BLS 'bLS
@@ -224,8 +248,12 @@
        Ptr CString -> Ptr CInt -> IO CUInt|]
 
 -- | Exports a function of type
--- /'B.ByteString' -> 'L.ByteString'/
--- for using in directive /haskell_run/.
+--
+-- @
+-- 'B.ByteString' -> 'L.ByteString'
+-- @
+--
+-- for using in directive __/haskell_run/__.
 ngxExportYY :: Name -> Q [Dec]
 ngxExportYY =
     ngxExport 'YY 'yY
@@ -234,8 +262,12 @@
        Ptr (StablePtr L.ByteString) -> IO CUInt|]
 
 -- | Exports a function of type
--- /'B.ByteString' -> 'Bool'/
--- for using in directive /haskell_run/.
+--
+-- @
+-- 'B.ByteString' -> 'Bool'
+-- @
+--
+-- for using in directive __/haskell_run/__.
 ngxExportBY :: Name -> Q [Dec]
 ngxExportBY =
     ngxExport 'BY 'bY
@@ -243,8 +275,12 @@
        Ptr CString -> Ptr CInt -> IO CUInt|]
 
 -- | Exports a function of type
--- /'B.ByteString' -> 'IO' 'L.ByteString'/
--- for using in directive /haskell_run/.
+--
+-- @
+-- 'B.ByteString' -> 'IO' 'L.ByteString'
+-- @
+--
+-- for using in directive __/haskell_run/__.
 ngxExportIOYY :: Name -> Q [Dec]
 ngxExportIOYY =
     ngxExportC 'IOYY 'ioyY
@@ -253,8 +289,12 @@
        Ptr (StablePtr L.ByteString) -> IO CUInt|]
 
 -- | Exports a function of type
--- /'B.ByteString' -> 'IO' 'L.ByteString'/
--- for using in directive /haskell_run_async/.
+--
+-- @
+-- 'B.ByteString' -> 'IO' 'L.ByteString'
+-- @
+--
+-- for using in directive __/haskell_run_async/__.
 ngxExportAsyncIOYY :: Name -> Q [Dec]
 ngxExportAsyncIOYY =
     ngxExportC 'IOYY 'asyncIOYY
@@ -263,9 +303,13 @@
        Ptr CUInt -> Ptr (StablePtr L.ByteString) -> IO (StablePtr (Async ()))|]
 
 -- | Exports a function of type
--- /'L.ByteString' -> 'B.ByteString' -> 'IO' 'L.ByteString'/
--- for using in directive /haskell_run_async_on_request_body/.
 --
+-- @
+-- 'L.ByteString' -> 'B.ByteString' -> 'IO' 'L.ByteString'
+-- @
+--
+-- for using in directive __/haskell_run_async_on_request_body/__.
+--
 -- The first argument of the exported function contains buffers of the client
 -- request body.
 ngxExportAsyncOnReqBody :: Name -> Q [Dec]
@@ -277,9 +321,13 @@
        Ptr CUInt -> Ptr (StablePtr L.ByteString) -> IO (StablePtr (Async ()))|]
 
 -- | Exports a function of type
--- /'B.ByteString' -> 'Bool' -> 'IO' 'L.ByteString'/
--- for using in directive /haskell_run_service/.
 --
+-- @
+-- 'B.ByteString' -> 'Bool' -> 'IO' 'L.ByteString'
+-- @
+--
+-- for using in directive __/haskell_run_service/__.
+--
 -- The boolean argument of the exported function marks that the service is
 -- being run for the first time.
 ngxExportServiceIOYY :: Name -> Q [Dec]
@@ -290,8 +338,13 @@
        Ptr CUInt -> Ptr (StablePtr L.ByteString) -> IO (StablePtr (Async ()))|]
 
 -- | Exports a function of type
--- /'B.ByteString' -> 'ContentHandlerResult'/
--- for using in directives /haskell_content/ and /haskell_static_content/.
+--
+-- @
+-- 'B.ByteString' -> 'ContentHandlerResult'
+-- @
+--
+-- for using in directives __/haskell_content/__ and
+-- __/haskell_static_content/__.
 ngxExportHandler :: Name -> Q [Dec]
 ngxExportHandler =
     ngxExport 'Handler 'handler
@@ -300,8 +353,13 @@
        Ptr (StablePtr L.ByteString) -> IO CUInt|]
 
 -- | Exports a function of type
--- /'B.ByteString' -> 'L.ByteString'/
--- for using in directives /haskell_content/ and /haskell_static_content/.
+--
+-- @
+-- 'B.ByteString' -> 'L.ByteString'
+-- @
+--
+-- for using in directives __/haskell_content/__ and
+-- __/haskell_static_content/__.
 ngxExportDefHandler :: Name -> Q [Dec]
 ngxExportDefHandler =
     ngxExport 'YY 'defHandler
@@ -310,8 +368,12 @@
        Ptr (StablePtr L.ByteString) -> IO CUInt|]
 
 -- | Exports a function of type
--- /'B.ByteString' -> 'UnsafeContentHandlerResult'/
--- for using in directive /haskell_unsafe_content/.
+--
+-- @
+-- 'B.ByteString' -> 'UnsafeContentHandlerResult'
+-- @
+--
+-- for using in directive __/haskell_unsafe_content/__.
 ngxExportUnsafeHandler :: Name -> Q [Dec]
 ngxExportUnsafeHandler =
     ngxExport 'UnsafeHandler 'unsafeHandler
@@ -319,8 +381,12 @@
        Ptr CString -> Ptr CSize -> Ptr CInt -> IO CUInt|]
 
 -- | Exports a function of type
--- /'B.ByteString' -> 'IO' 'ContentHandlerResult'/
--- for using in directive /haskell_async_content/.
+--
+-- @
+-- 'B.ByteString' -> 'IO' 'ContentHandlerResult'
+-- @
+--
+-- for using in directive __/haskell_async_content/__.
 ngxExportAsyncHandler :: Name -> Q [Dec]
 ngxExportAsyncHandler =
     ngxExport 'AsyncHandler 'asyncHandler
@@ -330,9 +396,13 @@
        Ptr CUInt -> Ptr (StablePtr L.ByteString) -> IO (StablePtr (Async ()))|]
 
 -- | Exports a function of type
--- /'L.ByteString' -> 'B.ByteString' -> 'IO' 'ContentHandlerResult'/
--- for using in directive /haskell_async_content_on_request_body/.
 --
+-- @
+-- 'L.ByteString' -> 'B.ByteString' -> 'IO' 'ContentHandlerResult'
+-- @
+--
+-- for using in directive __/haskell_async_content_on_request_body/__.
+--
 -- The first argument of the exported function contains buffers of the client
 -- request body.
 ngxExportAsyncHandlerOnReqBody :: Name -> Q [Dec]
@@ -345,8 +415,12 @@
        Ptr CUInt -> Ptr (StablePtr L.ByteString) -> IO (StablePtr (Async ()))|]
 
 -- | Exports a function of type
--- /'B.ByteString' -> 'IO' 'L.ByteString'/
--- for using in directive /haskell_service_hook/.
+--
+-- @
+-- 'B.ByteString' -> 'IO' 'L.ByteString'
+-- @
+--
+-- for using in directive __/haskell_service_hook/__.
 ngxExportServiceHook :: Name -> Q [Dec]
 ngxExportServiceHook =
     ngxExportC 'IOYY 'ioyYWithFree
@@ -782,19 +856,41 @@
     foldM (\k (I v) -> pokeElemOff x k v >> return (k + 1)) 0
         (take n $ versionBranch version)
 
--- | Returns an opaque pointer to the Nginx cycle object
+-- | Returns an opaque pointer to the Nginx /cycle object/
 -- for using it in C plugins.
+--
+-- Actual type of the returned pointer is
+--
+-- > ngx_cycle_t *
+--
+-- (value of argument __/cycle/__ in the worker's initialization function).
 ngxCyclePtr :: IO (Ptr ())
 ngxCyclePtr = readIORef ngxCyclePtrStore
 
--- | Returns an opaque pointer to the Nginx upstream main configuration
+-- | Returns an opaque pointer to the Nginx /upstream main configuration/
 -- for using it in C plugins.
+--
+-- Actual type of the returned pointer is
+--
+-- > ngx_http_upstream_main_conf_t *
+--
+-- (value of expression
+--
+-- >     ngx_http_cycle_get_module_main_conf(cycle, ngx_http_upstream_module))
+--
+-- in the worker's initialization function).
 ngxUpstreamMainConfPtr :: IO (Ptr ())
 ngxUpstreamMainConfPtr = readIORef ngxUpstreamMainConfPtrStore
 
--- | Returns an opaque pointer to the Nginx cached time object
+-- | Returns an opaque pointer to the Nginx /cached time object/
 -- for using it in C plugins.
-ngxCachedTimePtr :: IO (Ptr ())
+--
+-- Actual type of the returned pointer is
+--
+-- > volatile ngx_time_t **
+--
+-- (/address/ of the Nginx global variable __/ngx_cached_time/__).
+ngxCachedTimePtr :: IO (Ptr (Ptr ()))
 ngxCachedTimePtr = readIORef ngxCachedTimePtrStore
 
 foreign export ccall ngxExportSetCyclePtr :: Ptr () -> IO ()
@@ -805,8 +901,8 @@
 ngxExportSetUpstreamMainConfPtr :: Ptr () -> IO ()
 ngxExportSetUpstreamMainConfPtr = writeIORef ngxUpstreamMainConfPtrStore
 
-foreign export ccall ngxExportSetCachedTimePtr :: Ptr () -> IO ()
-ngxExportSetCachedTimePtr :: Ptr () -> IO ()
+foreign export ccall ngxExportSetCachedTimePtr :: Ptr (Ptr ()) -> IO ()
+ngxExportSetCachedTimePtr :: Ptr (Ptr ()) -> IO ()
 ngxExportSetCachedTimePtr = writeIORef ngxCachedTimePtrStore
 
 ngxCyclePtrStore :: IORef (Ptr ())
@@ -817,7 +913,7 @@
 ngxUpstreamMainConfPtrStore = unsafePerformIO $ newIORef nullPtr
 {-# NOINLINE ngxUpstreamMainConfPtrStore #-}
 
-ngxCachedTimePtrStore :: IORef (Ptr ())
+ngxCachedTimePtrStore :: IORef (Ptr (Ptr ()))
 ngxCachedTimePtrStore = unsafePerformIO $ newIORef nullPtr
 {-# NOINLINE ngxCachedTimePtrStore #-}
 
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:                    1.4.0
+version:                    1.4.1
 synopsis:                   Helper module for Nginx haskell module
 description:                Helper module for
         <http://github.com/lyokha/nginx-haskell-module Nginx haskell module>
