diff --git a/package.yaml b/package.yaml
index 4f05628ea..897122846 100644
--- a/package.yaml
+++ b/package.yaml
@@ -1,5 +1,5 @@
 name: simplexmq
-version: 2.2.0
+version: 2.2.1
 synopsis: SimpleXMQ message broker
 description: |
   This package includes <./docs/Simplex-Messaging-Server.html server>,
diff --git a/simplexmq.cabal b/simplexmq.cabal
index 5c992e587..dcc9597d8 100644
--- a/simplexmq.cabal
+++ b/simplexmq.cabal
@@ -5,7 +5,7 @@ cabal-version: 1.12
 -- see: https://github.com/sol/hpack
 
 name:           simplexmq
-version:        2.2.0
+version:        2.2.1
 synopsis:       SimpleXMQ message broker
 description:    This package includes <./docs/Simplex-Messaging-Server.html server>,
                 <./docs/Simplex-Messaging-Client.html client> and
diff --git a/src/Simplex/Messaging/Transport.hs b/src/Simplex/Messaging/Transport.hs
index 5971c9314..6d697b07f 100644
--- a/src/Simplex/Messaging/Transport.hs
+++ b/src/Simplex/Messaging/Transport.hs
@@ -96,7 +96,7 @@ supportedSMPVersions :: VersionRange
 supportedSMPVersions = mkVersionRange 1 1
 
 simplexMQVersion :: String
-simplexMQVersion = "2.2.0"
+simplexMQVersion = "2.2.1"
 
 -- * Transport connection class