diff --git a/deps/rabbit/BUILD.bazel b/deps/rabbit/BUILD.bazel
index 538e3c46b5a0..4cc788baa788 100644
--- a/deps/rabbit/BUILD.bazel
+++ b/deps/rabbit/BUILD.bazel
@@ -34,7 +34,7 @@ _APP_ENV = """[
 	    {ssl_listeners, []},
 	    {num_ssl_acceptors, 10},
 	    {ssl_options, []},
-	    {vm_memory_high_watermark, 0.4},
+	    {vm_memory_high_watermark, 0.6},
 	    {vm_memory_calculation_strategy, rss},
 	    {disk_free_limit, 50000000}, %% 50MB
 	    {backing_queue_module, rabbit_variable_queue},
diff --git a/deps/rabbit/Makefile b/deps/rabbit/Makefile
index 05136f18a02b..041c2614d870 100644
--- a/deps/rabbit/Makefile
+++ b/deps/rabbit/Makefile
@@ -14,7 +14,7 @@ define PROJECT_ENV
 	    {ssl_listeners, []},
 	    {num_ssl_acceptors, 10},
 	    {ssl_options, []},
-	    {vm_memory_high_watermark, 0.4},
+	    {vm_memory_high_watermark, 0.6},
 	    {vm_memory_calculation_strategy, rss},
 	    {disk_free_limit, 50000000}, %% 50MB
 	    {backing_queue_module, rabbit_variable_queue},
diff --git a/deps/rabbit/docs/rabbitmq.conf.example b/deps/rabbit/docs/rabbitmq.conf.example
index b08bd86135ef..b48f1b43a525 100644
--- a/deps/rabbit/docs/rabbitmq.conf.example
+++ b/deps/rabbit/docs/rabbitmq.conf.example
@@ -382,7 +382,7 @@
 
 ## Memory-based Flow Control threshold.
 ##
-# vm_memory_high_watermark.relative = 0.4
+# vm_memory_high_watermark.relative = 0.6
 
 ## Alternatively, we can set a limit (in bytes) of RAM used by the node.
 ##
diff --git a/deps/rabbit/priv/schema/rabbit.schema b/deps/rabbit/priv/schema/rabbit.schema
index 2fe114c4a609..e95cbecf40a8 100644
--- a/deps/rabbit/priv/schema/rabbit.schema
+++ b/deps/rabbit/priv/schema/rabbit.schema
@@ -1103,7 +1103,7 @@ end}.
 
 %% Memory-based Flow Control threshold.
 %%
-%% {vm_memory_high_watermark, 0.4},
+%% {vm_memory_high_watermark, 0.6},
 
 %% Alternatively, we can set a limit (in bytes) of RAM used by the node.
 %%
diff --git a/deps/rabbit/test/unit_vm_memory_monitor_SUITE.erl b/deps/rabbit/test/unit_vm_memory_monitor_SUITE.erl
index 09e782018f53..83fb5c27ef70 100644
--- a/deps/rabbit/test/unit_vm_memory_monitor_SUITE.erl
+++ b/deps/rabbit/test/unit_vm_memory_monitor_SUITE.erl
@@ -118,4 +118,4 @@ set_and_verify_vm_memory_high_watermark_absolute(MemLimit0) ->
         _           ->
             ct:fail("Expected memory high watermark to be ~tp but it was ~tp", [Interpreted, MemLimit])
     end,
-    vm_memory_monitor:set_vm_memory_high_watermark(0.4).
\ No newline at end of file
+    vm_memory_monitor:set_vm_memory_high_watermark(0.6).
diff --git a/deps/rabbitmq_mqtt/test/shared_SUITE.erl b/deps/rabbitmq_mqtt/test/shared_SUITE.erl
index 9f5bd81edf14..e265243d9c99 100644
--- a/deps/rabbitmq_mqtt/test/shared_SUITE.erl
+++ b/deps/rabbitmq_mqtt/test/shared_SUITE.erl
@@ -1417,7 +1417,7 @@ block(Config) ->
     puback_timeout = publish_qos1_timeout(C, Topic, <<"Still blocked">>, 1000),
 
     %% Unblock
-    rpc(Config, vm_memory_monitor, set_vm_memory_high_watermark, [0.4]),
+    rpc(Config, vm_memory_monitor, set_vm_memory_high_watermark, [0.6]),
     ok = expect_publishes(C, Topic, [<<"Not blocked yet">>,
                                      <<"Now blocked">>,
                                      <<"Still blocked">>]),
@@ -1458,7 +1458,7 @@ block_only_publisher(Config) ->
     ?assertEqual(puback_timeout, publish_qos1_timeout(Con, Topic, <<"from Con 2">>, 500)),
     ?assertEqual(pong, emqtt:ping(Sub)),
 
-    rpc(Config, vm_memory_monitor, set_vm_memory_high_watermark, [0.4]),
+    rpc(Config, vm_memory_monitor, set_vm_memory_high_watermark, [0.6]),
     %% Let it unblock
     timer:sleep(100),