diff --git a/aplazame-android-sdk/build.gradle b/aplazame-android-sdk/build.gradle
index 02c4ee4..d53fd73 100644
--- a/aplazame-android-sdk/build.gradle
+++ b/aplazame-android-sdk/build.gradle
@@ -28,8 +28,8 @@ dependencies {
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
 
-    api 'com.squareup.retrofit2:converter-gson:2.3.0'
+    api 'com.squareup.retrofit2:converter-gson:2.9.0'
     api 'com.google.code.gson:gson:2.8.2'
-    api 'com.squareup.retrofit2:converter-gson:2.3.0'
+    api 'com.squareup.retrofit2:converter-gson:2.9.0'
     api 'com.squareup.okhttp3:logging-interceptor:3.6.0'
 }