diff --git a/client/build.gradle b/client/build.gradle
index 474f28d..6e8726a 100644
--- a/client/build.gradle
+++ b/client/build.gradle
@@ -94,7 +94,7 @@ if(hasProperty('target') && target == 'android') {
 
 ext {
     oltu_version = "1.0.2"
-    retrofit_version = "2.3.0"
+    retrofit_version = "2.5.0"
     swagger_annotations_version = "1.5.15"
     junit_version = "4.12"
     threetenbp_version = "1.3.5"