diff --git a/java/proguard.flags b/java/proguard.flags
index ca205b9..c562834 100644
--- a/java/proguard.flags
+++ b/java/proguard.flags
@@ -38,6 +38,7 @@
 
 -keep class com.android.inputmethod.latin.ResearchLogger {
   void flush();
+  void publishCurrentLogUnit(...);
 }
 
 -keep class com.android.inputmethod.keyboard.KeyboardLayoutSet$Builder {