diff --git a/app-v3/build.gradle b/app-v3/build.gradle
index 864b9202..9fb6be39 100644
--- a/app-v3/build.gradle
+++ b/app-v3/build.gradle
@@ -60,7 +60,7 @@ ext {
     libraryVersion = [
             support        : '28.0.0',
             gson           : '2.8.6',
-            retrofit2      : '2.4.0',
+            retrofit2      : '2.9.0',
             circleimageview: '2.1.0',
             dagger         : '2.18',
             glassfish      : '10.0-b28',