diff --git a/src/test/java/soongsil/kidbean/server/tuning/ImageQuizConcurrentTest.java b/src/test/java/soongsil/kidbean/server/tuning/ImageQuizConcurrentTest.java
index d935e22..d24e8a0 100644
--- a/src/test/java/soongsil/kidbean/server/tuning/ImageQuizConcurrentTest.java
+++ b/src/test/java/soongsil/kidbean/server/tuning/ImageQuizConcurrentTest.java
@@ -37,7 +37,7 @@
 
 @Slf4j
 @TestInstance(TestInstance.Lifecycle.PER_CLASS)
-@SpringBootTest
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 public class ImageQuizConcurrentTest {
 
     @Autowired
@@ -63,6 +63,7 @@ public class ImageQuizConcurrentTest {
 
     @BeforeAll
     void setUp() {
+        imageQuizRepository.deleteAll();
         for (int i = 1; i <= 100; i++) {
             Member member = memberRepository.save(
                     Member.builder()
diff --git a/src/test/java/soongsil/kidbean/server/tuning/ImageQuizTuningTest.java b/src/test/java/soongsil/kidbean/server/tuning/ImageQuizTuningTest.java
index 8539849..47dd88f 100644
--- a/src/test/java/soongsil/kidbean/server/tuning/ImageQuizTuningTest.java
+++ b/src/test/java/soongsil/kidbean/server/tuning/ImageQuizTuningTest.java
@@ -53,6 +53,7 @@ public class ImageQuizTuningTest {
 
     @BeforeAll
     void setUp() {
+        imageQuizRepository.deleteAll();
         for (int i = 0; i < 500; i++) {
             Member DUMMY_MEMBER = Member.builder()
                     .email("email1")
diff --git a/src/test/java/soongsil/kidbean/server/tuning/WordQuizConcurrentTest.java b/src/test/java/soongsil/kidbean/server/tuning/WordQuizConcurrentTest.java
index c8d18f1..58e031b 100644
--- a/src/test/java/soongsil/kidbean/server/tuning/WordQuizConcurrentTest.java
+++ b/src/test/java/soongsil/kidbean/server/tuning/WordQuizConcurrentTest.java
@@ -39,7 +39,7 @@
 
 @Slf4j
 @TestInstance(TestInstance.Lifecycle.PER_CLASS)
-@SpringBootTest
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 public class WordQuizConcurrentTest {
 
     @Autowired
@@ -65,6 +65,7 @@ public class WordQuizConcurrentTest {
 
     @BeforeAll
     void setUp() {
+        wordQuizRepository.deleteAll();
         for (int i = 1; i <= 100; i++) {
             Member member = memberRepository.save(
                     Member.builder()
diff --git a/src/test/resources/application.yml b/src/test/resources/application.yml
index d1dc285..a422b8c 100644
--- a/src/test/resources/application.yml
+++ b/src/test/resources/application.yml
@@ -3,10 +3,10 @@ spring:
     active: test
 
   datasource:
-    driver-class-name: com.mysql.cj.jdbc.Driver
-    url: jdbc:mysql://localhost:3306/kidbeantestdb
-    username: root
-    password: test
+    driver-class-name: org.h2.Driver
+    url: jdbc:h2:mem:testdb;MODE=MySQL;
+    username: sa
+    password:
 
   jpa:
     hibernate: