diff --git a/java/build.gradle b/java/build.gradle
index 951b1c6..df2f528 100644
--- a/java/build.gradle
+++ b/java/build.gradle
@@ -10,14 +10,12 @@ repositories {
 }
 
 dependencies {
-  // Replace with path to your local download of the Google Wallet library
-  implementation files('lib/libwalletobjects_public_java_lib_v1.jar')
-
   implementation 'com.auth0:java-jwt:3.19.1'
   implementation 'com.auth0:jwks-rsa:0.9.0'
   implementation 'com.fasterxml.jackson.core:jackson-databind:2.13.4.2'
   implementation 'com.google.apis:google-api-services-oauth2:v2-rev20200213-2.0.0'
-  implementation 'com.google.api-client:google-api-client:1.25.0'
+  implementation 'com.google.api-client:google-api-client:2.2.0'
+  implementation 'com.google.apis:google-api-services-walletobjects:v1-rev20240220-2.0.0'
   implementation 'com.google.auth:google-auth-library-oauth2-http:1.10.0'
   implementation 'com.squareup.okhttp3:okhttp:4.3.1'
   implementation 'javax.json:javax.json-api:1.1'
diff --git a/java/src/main/java/com/google/developers/wallet/rest/DemoEventTicket.java b/java/src/main/java/com/google/developers/wallet/rest/DemoEventTicket.java
index c4907d4..21fddbd 100644
--- a/java/src/main/java/com/google/developers/wallet/rest/DemoEventTicket.java
+++ b/java/src/main/java/com/google/developers/wallet/rest/DemoEventTicket.java
@@ -26,7 +26,7 @@ import com.google.api.client.googleapis.json.GoogleJsonError;
 import com.google.api.client.googleapis.json.GoogleJsonResponseException;
 import com.google.api.client.http.*;
 import com.google.api.client.json.gson.GsonFactory;
-import com.google.api.services.walletobjects.Walletobjects;
+import com.google.api.services.walletobjects.*;
 import com.google.api.services.walletobjects.model.*;
 import com.google.auth.http.HttpCredentialsAdapter;
 import com.google.auth.oauth2.GoogleCredentials;
@@ -64,11 +64,9 @@ public class DemoEventTicket {
    *
    */
   public void auth() throws Exception {
-    String scope = "https://www.googleapis.com/auth/wallet_object.issuer";
-
     credentials =
         GoogleCredentials.fromStream(new FileInputStream(keyFilePath))
-            .createScoped(List.of(scope));
+            .createScoped(List.of(WalletobjectsScopes.WALLET_OBJECT_ISSUER));
     credentials.refresh();
 
     HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
diff --git a/java/src/main/java/com/google/developers/wallet/rest/DemoFlight.java b/java/src/main/java/com/google/developers/wallet/rest/DemoFlight.java
index 1dc815a..79b76be 100644
--- a/java/src/main/java/com/google/developers/wallet/rest/DemoFlight.java
+++ b/java/src/main/java/com/google/developers/wallet/rest/DemoFlight.java
@@ -26,7 +26,7 @@ import com.google.api.client.googleapis.json.GoogleJsonError;
 import com.google.api.client.googleapis.json.GoogleJsonResponseException;
 import com.google.api.client.http.*;
 import com.google.api.client.json.gson.GsonFactory;
-import com.google.api.services.walletobjects.Walletobjects;
+import com.google.api.services.walletobjects.*;
 import com.google.api.services.walletobjects.model.*;
 import com.google.auth.http.HttpCredentialsAdapter;
 import com.google.auth.oauth2.GoogleCredentials;
@@ -64,11 +64,9 @@ public class DemoFlight {
    *
    */
   public void auth() throws Exception {
-    String scope = "https://www.googleapis.com/auth/wallet_object.issuer";
-
     credentials =
         GoogleCredentials.fromStream(new FileInputStream(keyFilePath))
-            .createScoped(List.of(scope));
+            .createScoped(List.of(WalletobjectsScopes.WALLET_OBJECT_ISSUER));
     credentials.refresh();
 
     HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
diff --git a/java/src/main/java/com/google/developers/wallet/rest/DemoGeneric.java b/java/src/main/java/com/google/developers/wallet/rest/DemoGeneric.java
index cc612ee..d9f8644 100644
--- a/java/src/main/java/com/google/developers/wallet/rest/DemoGeneric.java
+++ b/java/src/main/java/com/google/developers/wallet/rest/DemoGeneric.java
@@ -26,7 +26,7 @@ import com.google.api.client.googleapis.json.GoogleJsonError;
 import com.google.api.client.googleapis.json.GoogleJsonResponseException;
 import com.google.api.client.http.*;
 import com.google.api.client.json.gson.GsonFactory;
-import com.google.api.services.walletobjects.Walletobjects;
+import com.google.api.services.walletobjects.*;
 import com.google.api.services.walletobjects.model.*;
 import com.google.auth.http.HttpCredentialsAdapter;
 import com.google.auth.oauth2.GoogleCredentials;
@@ -64,11 +64,9 @@ public class DemoGeneric {
    *
    */
   public void auth() throws Exception {
-    String scope = "https://www.googleapis.com/auth/wallet_object.issuer";
-
     credentials =
         GoogleCredentials.fromStream(new FileInputStream(keyFilePath))
-            .createScoped(List.of(scope));
+            .createScoped(List.of(WalletobjectsScopes.WALLET_OBJECT_ISSUER));
     credentials.refresh();
 
     HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
diff --git a/java/src/main/java/com/google/developers/wallet/rest/DemoGiftCard.java b/java/src/main/java/com/google/developers/wallet/rest/DemoGiftCard.java
index eaca275..137ea7b 100644
--- a/java/src/main/java/com/google/developers/wallet/rest/DemoGiftCard.java
+++ b/java/src/main/java/com/google/developers/wallet/rest/DemoGiftCard.java
@@ -26,7 +26,7 @@ import com.google.api.client.googleapis.json.GoogleJsonError;
 import com.google.api.client.googleapis.json.GoogleJsonResponseException;
 import com.google.api.client.http.*;
 import com.google.api.client.json.gson.GsonFactory;
-import com.google.api.services.walletobjects.Walletobjects;
+import com.google.api.services.walletobjects.*;
 import com.google.api.services.walletobjects.model.*;
 import com.google.auth.http.HttpCredentialsAdapter;
 import com.google.auth.oauth2.GoogleCredentials;
@@ -64,11 +64,9 @@ public class DemoGiftCard {
    *
    */
   public void auth() throws Exception {
-    String scope = "https://www.googleapis.com/auth/wallet_object.issuer";
-
     credentials =
         GoogleCredentials.fromStream(new FileInputStream(keyFilePath))
-            .createScoped(List.of(scope));
+            .createScoped(List.of(WalletobjectsScopes.WALLET_OBJECT_ISSUER));
     credentials.refresh();
 
     HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
diff --git a/java/src/main/java/com/google/developers/wallet/rest/DemoLoyalty.java b/java/src/main/java/com/google/developers/wallet/rest/DemoLoyalty.java
index c5fcd31..e0d5df7 100644
--- a/java/src/main/java/com/google/developers/wallet/rest/DemoLoyalty.java
+++ b/java/src/main/java/com/google/developers/wallet/rest/DemoLoyalty.java
@@ -26,7 +26,7 @@ import com.google.api.client.googleapis.json.GoogleJsonError;
 import com.google.api.client.googleapis.json.GoogleJsonResponseException;
 import com.google.api.client.http.*;
 import com.google.api.client.json.gson.GsonFactory;
-import com.google.api.services.walletobjects.Walletobjects;
+import com.google.api.services.walletobjects.*;
 import com.google.api.services.walletobjects.model.*;
 import com.google.auth.http.HttpCredentialsAdapter;
 import com.google.auth.oauth2.GoogleCredentials;
@@ -64,11 +64,9 @@ public class DemoLoyalty {
    *
    */
   public void auth() throws Exception {
-    String scope = "https://www.googleapis.com/auth/wallet_object.issuer";
-
     credentials =
         GoogleCredentials.fromStream(new FileInputStream(keyFilePath))
-            .createScoped(List.of(scope));
+            .createScoped(List.of(WalletobjectsScopes.WALLET_OBJECT_ISSUER));
     credentials.refresh();
 
     HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
diff --git a/java/src/main/java/com/google/developers/wallet/rest/DemoOffer.java b/java/src/main/java/com/google/developers/wallet/rest/DemoOffer.java
index 707e2f2..0cb792e 100644
--- a/java/src/main/java/com/google/developers/wallet/rest/DemoOffer.java
+++ b/java/src/main/java/com/google/developers/wallet/rest/DemoOffer.java
@@ -26,7 +26,7 @@ import com.google.api.client.googleapis.json.GoogleJsonError;
 import com.google.api.client.googleapis.json.GoogleJsonResponseException;
 import com.google.api.client.http.*;
 import com.google.api.client.json.gson.GsonFactory;
-import com.google.api.services.walletobjects.Walletobjects;
+import com.google.api.services.walletobjects.*;
 import com.google.api.services.walletobjects.model.*;
 import com.google.auth.http.HttpCredentialsAdapter;
 import com.google.auth.oauth2.GoogleCredentials;
@@ -64,11 +64,9 @@ public class DemoOffer {
    *
    */
   public void auth() throws Exception {
-    String scope = "https://www.googleapis.com/auth/wallet_object.issuer";
-
     credentials =
         GoogleCredentials.fromStream(new FileInputStream(keyFilePath))
-            .createScoped(List.of(scope));
+            .createScoped(List.of(WalletobjectsScopes.WALLET_OBJECT_ISSUER));
     credentials.refresh();
 
     HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
diff --git a/java/src/main/java/com/google/developers/wallet/rest/DemoTransit.java b/java/src/main/java/com/google/developers/wallet/rest/DemoTransit.java
index a8190e9..f79609c 100644
--- a/java/src/main/java/com/google/developers/wallet/rest/DemoTransit.java
+++ b/java/src/main/java/com/google/developers/wallet/rest/DemoTransit.java
@@ -26,7 +26,7 @@ import com.google.api.client.googleapis.json.GoogleJsonError;
 import com.google.api.client.googleapis.json.GoogleJsonResponseException;
 import com.google.api.client.http.*;
 import com.google.api.client.json.gson.GsonFactory;
-import com.google.api.services.walletobjects.Walletobjects;
+import com.google.api.services.walletobjects.*;
 import com.google.api.services.walletobjects.model.*;
 import com.google.auth.http.HttpCredentialsAdapter;
 import com.google.auth.oauth2.GoogleCredentials;
@@ -63,11 +63,9 @@ public class DemoTransit {
    *
    */
   public void auth() throws Exception {
-    String scope = "https://www.googleapis.com/auth/wallet_object.issuer";
-
     credentials =
         GoogleCredentials.fromStream(new FileInputStream(keyFilePath))
-            .createScoped(List.of(scope));
+            .createScoped(List.of(WalletobjectsScopes.WALLET_OBJECT_ISSUER));
     credentials.refresh();
 
     HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();