diff --git a/seedvault/consumer-rules.pro b/seedvault/consumer-rules.pro
index e69de29..7394e3f 100644
--- a/seedvault/consumer-rules.pro
+++ b/seedvault/consumer-rules.pro
@@ -0,0 +1,6 @@
+# Preserve all public classes, and their public and protected fields and
+# methods.
+
+-keep public class com.solanamobile.seedvault.* {
+    public protected *;
+}