diff --git a/period.cabal b/period.cabal
--- a/period.cabal
+++ b/period.cabal
@@ -1,5 +1,5 @@
 name:                period
-version:             0.1.0.1
+version:             0.1.0.2
 synopsis:            Parse and format date periods, collapse and expand their text representations.
 -- description:         
 homepage:            https://github.com/w3rs/period
@@ -17,7 +17,8 @@
   exposed-modules:     Text.Period
   build-depends:
                 base >=4.6 && < 4.9,
-                time >=1.5,
+                time >= 1.4.2,
+                old-locale >= 1.0.0.6,
                 text >= 1.2,
                 text-show >= 2,
                 parsec >= 3.1
diff --git a/src/Text/Period.hs b/src/Text/Period.hs
--- a/src/Text/Period.hs
+++ b/src/Text/Period.hs
@@ -10,13 +10,15 @@
  , formatPeriod, collapsePeriod
  )where
 
+import System.Locale (defaultTimeLocale)
+
 import           Control.Applicative hiding ((<|>))
 import           Control.Arrow
 import           Control.Monad
 import           Data.Char
 import           Data.Monoid         ((<>))
 import qualified Data.Text           as T
-import           Data.Time
+import           Data.Time hiding (defaultTimeLocale)
 
 import Prelude
 import TextShow (showt)