diff --git a/app/build.gradle b/app/build.gradle
index 0be6c7b..4c4b16f 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -33,7 +33,12 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.2.0'
     implementation 'com.google.android.material:material:1.2.1'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
-    testImplementation 'junit:junit:4.+'
+    testImplementation 'junit:junit:4.13.1'
+
+    // okhttp
+    implementation 'com.squareup.okhttp3:okhttp:4.9.0'
+    testImplementation 'com.squareup.okhttp3:mockwebserver:4.9.0'
+    
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
 }
\ No newline at end of file