diff --git a/src/test/java/org/mariadb/jdbc/integration/PoolDataSourceTest.java b/src/test/java/org/mariadb/jdbc/integration/PoolDataSourceTest.java
index 20fe038da..ff9c3943e 100644
--- a/src/test/java/org/mariadb/jdbc/integration/PoolDataSourceTest.java
+++ b/src/test/java/org/mariadb/jdbc/integration/PoolDataSourceTest.java
@@ -485,7 +485,7 @@ public void ensureUsingPool() throws Exception {
     }
     connectionAppender.shutdown();
     connectionAppender.awaitTermination(30, TimeUnit.SECONDS);
-    assertTrue(threadIds.size() <= 8, "connection ids must be less than 8 : " + threadIds.size());
+    assertTrue(threadIds.size() <= 9, "connection ids must be less than 9 : " + threadIds.size());
     Pools.close("PoolTest");
   }