diff --git a/Annex/UUID.hs b/Annex/UUID.hs
index 1e80d6fe11..0e87cda591 100644
--- a/Annex/UUID.hs
+++ b/Annex/UUID.hs
@@ -35,8 +35,8 @@ import qualified Git.Config
 import Config
 
 import qualified Data.UUID as U
+import qualified Data.UUID.V4 as U4
 import qualified Data.UUID.V5 as U5
-import System.Random
 import Data.Bits.Utils
 
 configkey :: ConfigKey
@@ -44,7 +44,7 @@ configkey = annexConfig "uuid"
 
 {- Generates a random UUID, that does not include the MAC address. -}
 genUUID :: IO UUID
-genUUID = UUID . show <$> (randomIO :: IO U.UUID)
+genUUID = UUID . show <$> U4.nextRandom
 
 {- Generates a UUID from a given string, using a namespace.
  - Given the same namespace, the same string will always result
diff --git a/CHANGELOG b/CHANGELOG
index 27069ebe94..ca2a417eab 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -13,6 +13,9 @@ git-annex (6.20160726) UNRELEASED; urgency=medium
   * git-annex.cabal: Temporarily limit to persistent <2.5
     since esqueleto 2.4.3 is not compatible with the newer version.
   * Removed dependency on json library; all JSON is now handled by aeson.
+  * When built with uuid-1.3.12, generate more random UUIDs than before.
+    (However, this did not impact git-annex much, so a hard depedency has
+    not been added on uuid-1.3.12.)
 
  -- Joey Hess <id@joeyh.name>  Wed, 20 Jul 2016 12:03:15 -0400
 
diff --git a/git-annex.cabal b/git-annex.cabal
index 9e2adbc8fd..36586a4387 100644
--- a/git-annex.cabal
+++ b/git-annex.cabal
@@ -328,7 +328,8 @@ Executable git-annex
    QuickCheck (>= 2.1),
    stm (>= 2.3),
    mtl (>= 2),
-   process, data-default, case-insensitive, uuid, random, dlist,
+   uuid (>= 1.2.6),
+   process, data-default, case-insensitive, random, dlist,
    unix-compat, SafeSemaphore, async, directory, filepath, IfElse,
    MissingH, hslogger, monad-logger,
    utf8-string, bytestring, text, sandi,