diff --git a/chargebee/consumer-rules.pro b/chargebee/consumer-rules.pro
index 83dc4b3..4ceb962 100644
--- a/chargebee/consumer-rules.pro
+++ b/chargebee/consumer-rules.pro
@@ -1,2 +1,14 @@
 # keep the classes when optimizing the code
--keep class com.chargebee.android.** { *;}
\ No newline at end of file
+-keep class com.chargebee.android.** { *;}
+
+# With R8 full mode generic signatures are stripped for classes that are not
+# kept. Suspend functions are wrapped in continuations where the type argument
+# is used.
+-keep,allowobfuscation,allowshrinking class kotlin.coroutines.Continuation
+ 
+# R8 full mode strips generic signatures from return types if not kept.
+-if interface * { @retrofit2.http.* public *** *(...); }
+-keep,allowoptimization,allowshrinking,allowobfuscation class <3>
+ 
+# With R8 full mode generic signatures are stripped for classes that are not kept.
+-keep,allowobfuscation,allowshrinking class retrofit2.Response