diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 70b7d42e7..cbec6430d 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -1,3 +1,6 @@
+# Gson
+-keep class com.google.gson.** { *; }
+
 # SimpleXML
 -keep interface org.simpleframework.xml.core.Label { public *; }
 -keep class * implements org.simpleframework.xml.core.Label { public *; }