diff --git a/proguard.flags b/proguard.flags
index 05963f7..19d2f0c 100644
--- a/proguard.flags
+++ b/proguard.flags
@@ -70,3 +70,10 @@
   public float getBackgroundAlpha();
   public void setBackgroundAlpha(float);
 }
+
+# Proguard will strip new callbacks in LauncherApps.Callback from
+# WrappedCallback if compiled against an older SDK. Don't let this happen.
+-keep class com.android.launcher3.compat.** {
+  *;
+}
+