diff --git a/examples/android-proguard-example/proguard.cfg b/examples/android-proguard-example/proguard.cfg
index e0e0a97f..95f31ec6 100644
--- a/examples/android-proguard-example/proguard.cfg
+++ b/examples/android-proguard-example/proguard.cfg
@@ -25,4 +25,8 @@
   @com.google.gson.annotations.SerializedName <fields>;
 }
 
+# Retain generic signatures of TypeToken and its subclasses with R8 version 3.0 and higher.
+-keep,allowobfuscation,allowshrinking class com.google.gson.reflect.TypeToken
+-keep,allowobfuscation,allowshrinking class * extends com.google.gson.reflect.TypeToken
+
 ##---------------End: proguard configuration for Gson  ----------