diff --git a/hzk.cabal b/hzk.cabal
--- a/hzk.cabal
+++ b/hzk.cabal
@@ -1,7 +1,7 @@
 name:          hzk
 author:        DiegoSouza <dsouza@c0d3.xxx>
 license:       BSD3
-version:       1.0.0
+version:       1.0.1
 category:      Database
 homepage:      http://github.com/dgvncsz0f/hzk
 synopsis:      Haskell client library for Apache Zookeeper
@@ -27,6 +27,7 @@
   exposed-modules:     Database.Zookeeper
   extra-libraries:     zookeeper_mt
   default-language:    Haskell2010
+  default-extensions:  Safe
 
 test-suite test-zookeeper
   type:                exitcode-stdio-1.0
diff --git a/src/Database/Zookeeper.hs b/src/Database/Zookeeper.hs
--- a/src/Database/Zookeeper.hs
+++ b/src/Database/Zookeeper.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE Safe #-}
+
 -- This file is part of zhk
 --
 -- All rights reserved.
@@ -93,8 +95,8 @@
        , ZKError (..)
        ) where
 
-import           Foreign
 import           Foreign.C
+import           Foreign.Safe
 import           Control.Monad
 import qualified Data.ByteString as B
 import           Control.Exception
diff --git a/src/Database/Zookeeper/CApi.hsc b/src/Database/Zookeeper/CApi.hsc
--- a/src/Database/Zookeeper/CApi.hsc
+++ b/src/Database/Zookeeper/CApi.hsc
@@ -1,3 +1,4 @@
+{-# LANGUAGE Safe                     #-}
 {-# LANGUAGE ForeignFunctionInterface #-}
 
 -- This file is part of zhk
@@ -74,8 +75,8 @@
 
 #include <zookeeper.h>
 
-import           Foreign
 import           Foreign.C
+import           Foreign.Safe
 import qualified Data.ByteString as B
 import           Control.Applicative
 import           Database.Zookeeper.Types
diff --git a/src/Database/Zookeeper/Types.hs b/src/Database/Zookeeper/Types.hs
--- a/src/Database/Zookeeper/Types.hs
+++ b/src/Database/Zookeeper/Types.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE Safe #-}
+
 -- This file is part of zhk
 --
 -- All rights reserved.
@@ -67,8 +69,8 @@
        , CStringsCompletionFn
        ) where
 
-import           Foreign
 import           Foreign.C
+import           Foreign.Safe
 import qualified Data.ByteString as B
 
 -- | Zookeeper connection handler