diff --git a/packages/Keyguard/proguard.flags b/packages/Keyguard/proguard.flags
index 00ca0fabf9fa6..fb74b64cb92b4 100644
--- a/packages/Keyguard/proguard.flags
+++ b/packages/Keyguard/proguard.flags
@@ -1,2 +1,27 @@
--keep public class com.android.keyguard.KeyguardService
+-keep public class * {
+  public void setBackgroundAlpha(float);
+  public float getBackgroundAlpha();
+  public void setContentAlpha(float);
+  public float getContentAlpha();
+  public void setAlpha(float);
+  public float getAlpha();
+  public void setAlpha(int);
+  public int getAlpha();
+  public void setRotationX(float);
+  public float getRotationX();
+  public void setRotationY(float);
+  public float getRotationY();
+  public void setPivotX(float);
+  public float getPivotX();
+  public void setPivotY(float);
+  public float getPivotY();
+  public void setScaleX(float);
+  public float getScaleX();
+  public void setScaleY(float);
+  public float getScaleY();
+  public void setTranslationX(float);
+  public float getTranslationX();
+  public void setTranslationY(float);
+  public float getTranslationY();
+}