diff --git a/librdkafka b/librdkafka
index 826f585..b4c6085 160000
--- a/librdkafka
+++ b/librdkafka
@@ -1 +1 @@
-Subproject commit 826f585564ec33750e9211c7eeb801d3f85a91a0
+Subproject commit b4c608570f796c18ff2211a7af876046d264d392
diff --git a/tests/consumer.lua b/tests/consumer.lua
index e47f720..d1baa93 100644
--- a/tests/consumer.lua
+++ b/tests/consumer.lua
@@ -203,7 +203,7 @@ local function test_seek_partitions()
     local out = consumer:output()
 
     for _ = 1, 5 do
-        local msg = out:get(3)
+        local msg = out:get(10)
         if msg == nil then
             error('Message is not delivered')
         end
diff --git a/tests/test_consumer.py b/tests/test_consumer.py
index f9358fd..f116e1f 100644
--- a/tests/test_consumer.py
+++ b/tests/test_consumer.py
@@ -211,12 +211,15 @@ def test_consumer_should_completely_unsubscribe_from_topics():
         "value": "test34"
     }
 
-    write_into_kafka("test_unsubscribe", (message1, message2))
+    t = f"test_unsubscribe_{randomword(4)}"
+    write_into_kafka(t, (message1, message2))
 
     server = get_server()
 
-    with create_consumer(server, KAFKA_HOST, {"group.id": "should_completely_unsubscribe_from_topics"}):
-        server.call("consumer.subscribe", [["test_unsubscribe"]])
+    with create_consumer(server, KAFKA_HOST, {
+        "group.id": "should_completely_unsubscribe_from_topics",
+    }):
+        server.call("consumer.subscribe", [[t]])
 
         response = server.call("consumer.consume", [10])[0]
 
@@ -225,9 +228,9 @@ def test_consumer_should_completely_unsubscribe_from_topics():
             "test2",
         }
 
-        server.call("consumer.unsubscribe", [["test_unsubscribe"]])
+        server.call("consumer.unsubscribe", [[t]])
 
-        write_into_kafka("test_unsubscribe", (message3, ))
+        write_into_kafka(t, (message3, ))
 
         response = server.call("consumer.consume", [10])
 
@@ -257,11 +260,16 @@ def test_consumer_should_partially_unsubscribe_from_topics():
 
     server = get_server()
 
-    with create_consumer(server, KAFKA_HOST, {"group.id": "should_partially_unsubscribe_from_topics"}):
-        server.call("consumer.subscribe", [["test_unsub_partially_1", "test_unsub_partially_2"]])
+    salt = randomword(4)
+    with create_consumer(server, KAFKA_HOST, {
+        "group.id": f"should_partially_unsubscribe_from_topics_{salt}",
+    }):
+        t1 = f"test_unsub_partially_{salt}_1"
+        t2 = f"test_unsub_partially_{salt}_2"
+        server.call("consumer.subscribe", [[t1, t2]])
 
-        write_into_kafka("test_unsub_partially_1", (message1, ))
-        write_into_kafka("test_unsub_partially_2", (message2, ))
+        write_into_kafka(t1, (message1, ))
+        write_into_kafka(t2, (message2, ))
         time.sleep(5)
 
         # waiting up to 30 seconds
@@ -272,10 +280,10 @@ def test_consumer_should_partially_unsubscribe_from_topics():
             "test2",
         }
 
-        server.call("consumer.unsubscribe", [["test_unsub_partially_1"]])
+        server.call("consumer.unsubscribe", [[t1]])
 
-        write_into_kafka("test_unsub_partially_1", (message3, ))
-        write_into_kafka("test_unsub_partially_2", (message4, ))
+        write_into_kafka(t1, (message3, ))
+        write_into_kafka(t2, (message4, ))
         time.sleep(5)
 
         response = server.call("consumer.consume", [30])[0]