diff --git a/WordPress/proguard.cfg b/WordPress/proguard.cfg
index bcc4db81ae67..c408aff90ed8 100644
--- a/WordPress/proguard.cfg
+++ b/WordPress/proguard.cfg
@@ -65,6 +65,33 @@
 -keep class org.wordpress.android.fluxc** { *; }
 ###### FluxC - end
 
+###### Gson model classes - begin
+# Kotlin data classes deserialized by Gson via reflection (Unsafe.allocateInstance).
+# AGP 9's R8 full mode can class-merge or transform these into abstract types,
+# causing InstantiationException / ClassCastException at runtime.
+
+# RecommendApiCallsProvider.RecommendTemplateData (Sentry 3GCQ, 3GDH)
+-keep class org.wordpress.android.models.recommend.** { *; }
+
+# InviteLinksApiCallsProvider.InviteLinksItem
+-keep class org.wordpress.android.ui.people.InviteLinksApiCallsProvider$InviteLinksItem { *; }
+
+# ReaderReadingPreferences and its nested Theme/FontFamily/FontSize enums
+-keep class org.wordpress.android.ui.reader.models.ReaderReadingPreferences { *; }
+-keep class org.wordpress.android.ui.reader.models.ReaderReadingPreferences$* { *; }
+
+# SubfilterListItemMapper.MappedSubfilterListItem (top-level private)
+-keep class org.wordpress.android.ui.reader.subfilter.MappedSubfilterListItem { *; }
+
+# New stats card configurations and the *CardType enums referenced by their fields
+-keep class org.wordpress.android.ui.newstats.StatsCardsConfiguration { *; }
+-keep class org.wordpress.android.ui.newstats.StatsCardType { *; }
+-keep class org.wordpress.android.ui.newstats.InsightsCardType { *; }
+-keep class org.wordpress.android.ui.newstats.repository.InsightsCardsConfigurationRepository$PersistedConfig { *; }
+-keep class org.wordpress.android.ui.newstats.subscribers.SubscribersCardsConfiguration { *; }
+-keep class org.wordpress.android.ui.newstats.subscribers.SubscribersCardType { *; }
+###### Gson model classes - end
+
 ###### Dagger - begin
 -dontwarn com.google.errorprone.annotations.*
 ###### Dagger - end