diff --git a/keystore/java/android/security/KeyStore2.java b/keystore/java/android/security/KeyStore2.java
index df579bb..1034847 100644
--- a/keystore/java/android/security/KeyStore2.java
+++ b/keystore/java/android/security/KeyStore2.java
@@ -19,6 +19,7 @@
 import android.annotation.NonNull;
 import android.compat.annotation.ChangeId;
 import android.compat.annotation.Disabled;
+import android.os.Binder;
 import android.os.RemoteException;
 import android.os.ServiceManager;
 import android.os.ServiceSpecificException;
@@ -140,6 +141,7 @@
         if (mBinder == null || retryLookup) {
             mBinder = IKeystoreService.Stub.asInterface(ServiceManager
                     .getService(KEYSTORE2_SERVICE_NAME));
+            Binder.allowBlocking(mBinder.asBinder());
         }
         return mBinder;
     }
diff --git a/keystore/java/android/security/KeyStoreOperation.java b/keystore/java/android/security/KeyStoreOperation.java
index a6552dd..e6c1ea8 100644
--- a/keystore/java/android/security/KeyStoreOperation.java
+++ b/keystore/java/android/security/KeyStoreOperation.java
@@ -18,6 +18,7 @@
 
 import android.annotation.NonNull;
 import android.hardware.security.keymint.KeyParameter;
+import android.os.Binder;
 import android.os.RemoteException;
 import android.os.ServiceSpecificException;
 import android.security.keymaster.KeymasterDefs;
@@ -39,6 +40,7 @@
             Long challenge,
             KeyParameter[] parameters
     ) {
+        Binder.allowBlocking(operation.asBinder());
         this.mOperation = operation;
         this.mChallenge = challenge;
         this.mParameters = parameters;
diff --git a/keystore/java/android/security/KeyStoreSecurityLevel.java b/keystore/java/android/security/KeyStoreSecurityLevel.java
index d188b65..b85dd74 100644
--- a/keystore/java/android/security/KeyStoreSecurityLevel.java
+++ b/keystore/java/android/security/KeyStoreSecurityLevel.java
@@ -19,6 +19,7 @@
 import android.annotation.NonNull;
 import android.app.compat.CompatChanges;
 import android.hardware.security.keymint.KeyParameter;
+import android.os.Binder;
 import android.os.RemoteException;
 import android.os.ServiceSpecificException;
 import android.security.keystore.BackendBusyException;
@@ -45,6 +46,7 @@
     private final IKeystoreSecurityLevel mSecurityLevel;
 
     public KeyStoreSecurityLevel(IKeystoreSecurityLevel securityLevel) {
+        Binder.allowBlocking(securityLevel.asBinder());
         this.mSecurityLevel = securityLevel;
     }