diff --git a/src/keepass2android/proguard.cfg b/src/keepass2android/proguard.cfg
index c6b889d4..7a4df4a5 100644
--- a/src/keepass2android/proguard.cfg
+++ b/src/keepass2android/proguard.cfg
@@ -22,4 +22,11 @@
 }
 
 
--keep public class keepass2android.** {*; }
\ No newline at end of file
+-keep public class keepass2android.** {*; }
+
+-keepclasseswithmembers class keepass2android.softkeyboard.** {
+    native <methods>;
+}
+-keepclassmembers class keepass2android.softkeyboard.** {
+    native <methods>;
+}
\ No newline at end of file