diff --git a/Yesod/Core/Internal/Util.hs b/Yesod/Core/Internal/Util.hs
--- a/Yesod/Core/Internal/Util.hs
+++ b/Yesod/Core/Internal/Util.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 module Yesod.Core.Internal.Util
     ( putTime
     , getTime
@@ -11,7 +12,12 @@
 import qualified Data.Text      as T
 import           Data.Time      (Day (ModifiedJulianDay, toModifiedJulianDay),
                                  DiffTime, UTCTime (..), formatTime)
+
+#if MIN_VERSION_time(1,5,0)
+import           Data.Time      (defaultTimeLocale)
+#else
 import           System.Locale  (defaultTimeLocale)
+#endif
 
 putTime :: UTCTime -> Put
 putTime (UTCTime d t) =
diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,7 +1,19 @@
-__1.4.4.2__ `neverExpires` uses dates one year in the future (instead of in 2037).
+## 1.4.4.5
 
-__1.4.4.1__ Improvements to etag/if-none-match support #868 #869
+Support time 1.5
 
-__1.4.4__ Add the `notModified` and `setEtag` functions.
+## 1.4.4.2
 
-__1.4.3__ Switch to mwc-random for token generation.
+`neverExpires` uses dates one year in the future (instead of in 2037).
+
+## 1.4.4.1
+
+Improvements to etag/if-none-match support #868 #869
+
+## 1.4.4
+
+Add the `notModified` and `setEtag` functions.
+
+## 1.4.3
+
+Switch to mwc-random for token generation.
diff --git a/yesod-core.cabal b/yesod-core.cabal
--- a/yesod-core.cabal
+++ b/yesod-core.cabal
@@ -1,5 +1,5 @@
 name:            yesod-core
-version:         1.4.4.4
+version:         1.4.4.5
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>