diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 4de505b..f864765 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -14,3 +14,6 @@
 -keepclasseswithmembers class * {
     @retrofit2.http.* <methods>;
 }
+
+# Google Tink / EncryptedSharedPreferences - suppress missing errorprone annotations
+-dontwarn com.google.errorprone.annotations.**