diff --git a/libraries/proguard-square-retrofit2.pro b/libraries/proguard-square-retrofit2.pro
index 586c0f8..83a8263 100644
--- a/libraries/proguard-square-retrofit2.pro
+++ b/libraries/proguard-square-retrofit2.pro
@@ -1,11 +1,11 @@
 # Retrofit 2.X
-## https://square.github.io/retrofit/ ##
+## https://github.com/square/retrofit#proguard
 
--dontwarn retrofit2.**
--keep class retrofit2.** { *; }
+# Retain generic type information for use by reflection by converters and adapters.
 -keepattributes Signature
--keepattributes Exceptions
-
--keepclasseswithmembers class * {
+# Retain service method parameters.
+-keepclassmembernames,allowobfuscation interface * {
     @retrofit2.http.* <methods>;
 }
+# Ignore annotation used for build tooling.
+-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement