diff --git a/DOCKER_VERSION b/DOCKER_VERSION
index 815da58b..f8cb1fa1 100644
--- a/DOCKER_VERSION
+++ b/DOCKER_VERSION
@@ -1 +1 @@
-7.4.1
+7.4.2
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 9414594a..3d5e89ae 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,6 +1,10 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
+## [7.4.2] - 2019-12-02
+
+- (client) internal IXDNSLookup class requires a valid cancellation request function callback to be passed in
+
 ## [7.4.1] - 2019-12-02
 
 - (client) fix an overflow in the exponential back off code
diff --git a/ixsnake/ixsnake/IXRedisClient.cpp b/ixsnake/ixsnake/IXRedisClient.cpp
index 754041d8..afb6d6a8 100644
--- a/ixsnake/ixsnake/IXRedisClient.cpp
+++ b/ixsnake/ixsnake/IXRedisClient.cpp
@@ -29,8 +29,13 @@ namespace ix
             return false;
         }
 
+        CancellationRequest cancellationRequest = []() -> bool
+        {
+            return false;
+        };
+
         std::string errMsg;
-        return _socket->connect(hostname, port, errMsg, nullptr);
+        return _socket->connect(hostname, port, errMsg, cancellationRequest);
     }
 
     void RedisClient::stop()
diff --git a/ixwebsocket/IXDNSLookup.cpp b/ixwebsocket/IXDNSLookup.cpp
index ccf3f0bb..9114c10a 100644
--- a/ixwebsocket/IXDNSLookup.cpp
+++ b/ixwebsocket/IXDNSLookup.cpp
@@ -61,7 +61,7 @@ namespace ix
         errMsg = "no error";
 
         // Maybe a cancellation request got in before the background thread terminated ?
-        if (isCancellationRequested && isCancellationRequested())
+        if (isCancellationRequested())
         {
             errMsg = "cancellation requested";
             return nullptr;
@@ -107,7 +107,7 @@ namespace ix
             std::this_thread::sleep_for(std::chrono::milliseconds(_wait));
 
             // Were we cancelled ?
-            if (isCancellationRequested && isCancellationRequested())
+            if (isCancellationRequested())
             {
                 errMsg = "cancellation requested";
                 return nullptr;
@@ -115,7 +115,7 @@ namespace ix
         }
 
         // Maybe a cancellation request got in before the bg terminated ?
-        if (isCancellationRequested && isCancellationRequested())
+        if (isCancellationRequested())
         {
             errMsg = "cancellation requested";
             return nullptr;
diff --git a/ixwebsocket/IXWebSocketVersion.h b/ixwebsocket/IXWebSocketVersion.h
index 231b91e7..3dc24b96 100644
--- a/ixwebsocket/IXWebSocketVersion.h
+++ b/ixwebsocket/IXWebSocketVersion.h
@@ -6,4 +6,4 @@
 
 #pragma once
 
-#define IX_WEBSOCKET_VERSION "7.4.1"
+#define IX_WEBSOCKET_VERSION "7.4.2"