diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,3 +1,7 @@
+0.13.1.0
+--------
+* Add `streamExists` `ExpectedVersion` smart constructor.
+
 0.13.0.1
 --------
 * Bump protobuf version
diff --git a/Database/EventStore.hs b/Database/EventStore.hs
--- a/Database/EventStore.hs
+++ b/Database/EventStore.hs
@@ -176,6 +176,7 @@
     , noStreamVersion
     , emptyStreamVersion
     , exactEventVersion
+    , streamExists
       -- * Re-export
     , module Control.Concurrent.Async
     , (<>)
diff --git a/Database/EventStore/Internal/Types.hs b/Database/EventStore/Internal/Types.hs
--- a/Database/EventStore/Internal/Types.hs
+++ b/Database/EventStore/Internal/Types.hs
@@ -154,6 +154,7 @@
     | NoStream
     | EmptyStream
     | Exact Int32
+    | StreamExists
     deriving (Eq, Show)
 
 --------------------------------------------------------------------------------
@@ -161,8 +162,9 @@
 expVersionInt32 :: ExpectedVersion -> Int32
 expVersionInt32 Any         = -2
 expVersionInt32 NoStream    = -1
-expVersionInt32 EmptyStream = 0
+expVersionInt32 EmptyStream = -1
 expVersionInt32 (Exact i)   = i
+expVersionInt32 StreamExists = -4
 
 --------------------------------------------------------------------------------
 -- | This write should not conflict with anything and should always succeed.
@@ -188,6 +190,12 @@
 exactEventVersion i
     | i < 0     = error $ "expected version must be >= 0, but is " ++ show i
     | otherwise = Exact i
+
+--------------------------------------------------------------------------------
+-- | The stream should exist. If it or a metadata stream does not exist treat
+--   that as a concurrency problem.
+streamExists :: ExpectedVersion
+streamExists = streamExists
 
 --------------------------------------------------------------------------------
 -- EventStore Messages
diff --git a/eventstore.cabal b/eventstore.cabal
--- a/eventstore.cabal
+++ b/eventstore.cabal
@@ -10,7 +10,7 @@
 -- PVP summary:      +-+------- breaking API changes
 --                   | | +----- non-breaking API additions
 --                   | | | +--- code changes with no API change
-version:             0.13.0.1
+version:             0.13.1.0
 
 tested-with: GHC >= 7.8.3 && < 7.11