diff --git a/moshi/src/main/resources/META-INF/proguard/moshi.pro b/moshi/src/main/resources/META-INF/proguard/moshi.pro
index c639bc7..7a1d3d9 100644
--- a/moshi/src/main/resources/META-INF/proguard/moshi.pro
+++ b/moshi/src/main/resources/META-INF/proguard/moshi.pro
@@ -7,6 +7,12 @@
 
 -keep @com.squareup.moshi.JsonQualifier interface *
 
+# Enum field names are used by the integrated EnumJsonAdapter.
+# Annotate enums with @JsonClass(generateAdapter = false) to use them with Moshi.
+-keepclassmembernames @com.squareup.moshi.JsonClass class * extends java.lang.Enum {
+    <fields>;
+}
+
 # The name of @JsonClass types is used to look up the generated adapter.
 -keepnames @com.squareup.moshi.JsonClass class *