diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,3 +1,8 @@
+0.10.0.1
+--------
+* Bump async version.
+
+
 0.10.0.0
 --------
 * Fix $maxAge and $cacheControl TimeSpan metadata serialization.
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:             0.10.0.0
+version:             0.10.0.1
 
 tested-with: GHC >= 7.8.3 && < 7.11
 
@@ -101,7 +101,7 @@
   -- Other library packages from which modules are imported.
   build-depends:       base       >=4.7      && <5
                      , aeson      >=0.8      && <0.11
-                     , async      >=2.0      && <2.1
+                     , async      >=2.0      && <2.2
                      , bytestring >=0.10.4   && <0.11
                      , cereal     >=0.4      && <0.6
                      , containers >=0.5      && <0.6