diff --git a/modules/questdb/build.gradle b/modules/questdb/build.gradle
index 05d6b3bc873..7364293bbcc 100644
--- a/modules/questdb/build.gradle
+++ b/modules/questdb/build.gradle
@@ -7,7 +7,7 @@ dependencies {
     testRuntimeOnly 'org.postgresql:postgresql:42.7.7'
     testImplementation project(':jdbc-test')
     testImplementation 'org.assertj:assertj-core:3.27.3'
-    testImplementation 'org.questdb:questdb:7.3.9'
+    testImplementation 'org.questdb:questdb:9.0.0'
     testImplementation 'org.awaitility:awaitility:4.3.0'
     testImplementation 'org.apache.httpcomponents:httpclient:4.5.14'
 }
diff --git a/modules/questdb/src/test/java/org/testcontainers/junit/questdb/SimpleQuestDBTest.java b/modules/questdb/src/test/java/org/testcontainers/junit/questdb/SimpleQuestDBTest.java
index c38524018c3..16198740c0e 100644
--- a/modules/questdb/src/test/java/org/testcontainers/junit/questdb/SimpleQuestDBTest.java
+++ b/modules/questdb/src/test/java/org/testcontainers/junit/questdb/SimpleQuestDBTest.java
@@ -57,7 +57,7 @@ public void testRest() throws IOException {
     }
 
     private static void populateByInfluxLineProtocol(QuestDBContainer questdb, int rowCount) {
-        try (Sender sender = Sender.builder().address(questdb.getIlpUrl()).build()) {
+        try (Sender sender = Sender.builder(Sender.Transport.TCP).address(questdb.getIlpUrl()).build()) {
             for (int i = 0; i < rowCount; i++) {
                 sender
                     .table(TABLE_NAME)