diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index a454aab11..1a4d2c0f6 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -38,7 +38,7 @@
 # Pachli specific options
 
 # keep members of our model classes, they are used in json de/serialization
--keepclassmembers class app.pachli.core.network.model.* { *; }
+-keepclassmembers class app.pachli.core.network.model.** { *; }
 
 -keep public enum app.pachli.core.network.model.*$** {
     **[] $VALUES;