diff --git a/app/proguard/app.pro b/app/proguard/app.pro
index 8b3e3e2b..4d84d11d 100644
--- a/app/proguard/app.pro
+++ b/app/proguard/app.pro
@@ -67,3 +67,6 @@
 -keepclassmembers class pl.szczodrzynski.edziennik.data.api.szkolny.request.** { *; }
 -keepclassmembers class pl.szczodrzynski.edziennik.data.api.szkolny.response.** { *; }
 -keepclassmembernames class pl.szczodrzynski.edziennik.ui.modules.login.LoginInfo$Platform { *; }
+
+-keepclassmembernames class pl.szczodrzynski.fslogin.realm.RealmData { *; }
+-keepclassmembernames class pl.szczodrzynski.fslogin.realm.RealmData$Type { *; }