diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 3857f92..f4c48bc 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -6,3 +6,7 @@
 -dontwarn okhttp3.**
 -dontwarn okio.**
 -keep class okhttp3.** { *; }
+
+# Tink (via androidx.security-crypto, used for EncryptedSharedPreferences) references
+# compile-only Error Prone annotations that aren't present at runtime.
+-dontwarn com.google.errorprone.annotations.**