diff --git a/src/main/java/com/google/api/generator/gapic/composer/common/AbstractServiceStubSettingsClassComposer.java b/src/main/java/com/google/api/generator/gapic/composer/common/AbstractServiceStubSettingsClassComposer.java
index 2d1163b5c4..ea05faf3db 100644
--- a/src/main/java/com/google/api/generator/gapic/composer/common/AbstractServiceStubSettingsClassComposer.java
+++ b/src/main/java/com/google/api/generator/gapic/composer/common/AbstractServiceStubSettingsClassComposer.java
@@ -139,7 +139,7 @@ public abstract class AbstractServiceStubSettingsClassComposer implements ClassC
 
   protected static final TypeStore FIXED_TYPESTORE = createStaticTypes();
 
-  private static final VariableExpr DEFAULT_SERVICE_SCOPES_VAR_EXPR =
+  protected static final VariableExpr DEFAULT_SERVICE_SCOPES_VAR_EXPR =
       createDefaultServiceScopesVarExpr();
   private static final VariableExpr NESTED_UNARY_METHOD_SETTINGS_BUILDERS_VAR_EXPR =
       createNestedUnaryMethodSettingsBuildersVarExpr();
@@ -197,6 +197,33 @@ public GapicClass generate(GapicContext context, Service service) {
     return GapicClass.create(GapicClass.Kind.STUB, classDef);
   }
 
+  protected MethodDefinition createDefaultCredentialsProviderBuilderMethod() {
+    TypeNode returnType =
+        TypeNode.withReference(
+            ConcreteReference.withClazz(GoogleCredentialsProvider.Builder.class));
+    MethodInvocationExpr credsProviderBuilderExpr =
+        MethodInvocationExpr.builder()
+            .setStaticReferenceType(FIXED_TYPESTORE.get("GoogleCredentialsProvider"))
+            .setMethodName("newBuilder")
+            .build();
+    credsProviderBuilderExpr =
+        MethodInvocationExpr.builder()
+            .setExprReferenceExpr(credsProviderBuilderExpr)
+            .setMethodName("setScopesToApply")
+            .setArguments(DEFAULT_SERVICE_SCOPES_VAR_EXPR)
+            .setReturnType(returnType)
+            .build();
+    return MethodDefinition.builder()
+        .setHeaderCommentStatements(
+            SettingsCommentComposer.DEFAULT_CREDENTIALS_PROVIDER_BUILDER_METHOD_COMMENT)
+        .setScope(ScopeNode.PUBLIC)
+        .setIsStatic(true)
+        .setReturnType(returnType)
+        .setName("defaultCredentialsProviderBuilder")
+        .setReturnExpr(credsProviderBuilderExpr)
+        .build();
+  }
+
   protected abstract MethodDefinition createDefaultTransportTransportProviderBuilderMethod();
 
   protected abstract MethodDefinition createDefaultApiClientHeaderProviderBuilderMethod(
@@ -992,33 +1019,7 @@ private List<MethodDefinition> createDefaultHelperAndGetterMethods(
             .setReturnExpr(DEFAULT_SERVICE_SCOPES_VAR_EXPR)
             .build());
 
-    // Create the defaultCredentialsProviderBuilder method.
-    returnType =
-        TypeNode.withReference(
-            ConcreteReference.withClazz(GoogleCredentialsProvider.Builder.class));
-    MethodInvocationExpr credsProviderBuilderExpr =
-        MethodInvocationExpr.builder()
-            .setStaticReferenceType(FIXED_TYPESTORE.get("GoogleCredentialsProvider"))
-            .setMethodName("newBuilder")
-            .build();
-    credsProviderBuilderExpr =
-        MethodInvocationExpr.builder()
-            .setExprReferenceExpr(credsProviderBuilderExpr)
-            .setMethodName("setScopesToApply")
-            .setArguments(DEFAULT_SERVICE_SCOPES_VAR_EXPR)
-            .setReturnType(returnType)
-            .build();
-    javaMethods.add(
-        MethodDefinition.builder()
-            .setHeaderCommentStatements(
-                SettingsCommentComposer.DEFAULT_CREDENTIALS_PROVIDER_BUILDER_METHOD_COMMENT)
-            .setScope(ScopeNode.PUBLIC)
-            .setIsStatic(true)
-            .setReturnType(returnType)
-            .setName("defaultCredentialsProviderBuilder")
-            .setReturnExpr(credsProviderBuilderExpr)
-            .build());
-
+    javaMethods.add(createDefaultCredentialsProviderBuilderMethod());
     javaMethods.add(createDefaultTransportTransportProviderBuilderMethod());
     javaMethods.add(createDefaultTransportChannelProviderMethod());
     javaMethods.add(createDefaultApiClientHeaderProviderBuilderMethod(service, typeStore));
diff --git a/src/main/java/com/google/api/generator/gapic/composer/grpc/ServiceStubSettingsClassComposer.java b/src/main/java/com/google/api/generator/gapic/composer/grpc/ServiceStubSettingsClassComposer.java
index ceba11ee62..fc4c81e597 100644
--- a/src/main/java/com/google/api/generator/gapic/composer/grpc/ServiceStubSettingsClassComposer.java
+++ b/src/main/java/com/google/api/generator/gapic/composer/grpc/ServiceStubSettingsClassComposer.java
@@ -14,6 +14,7 @@
 
 package com.google.api.generator.gapic.composer.grpc;
 
+import com.google.api.gax.core.GoogleCredentialsProvider;
 import com.google.api.gax.grpc.GaxGrpcProperties;
 import com.google.api.gax.grpc.GrpcTransportChannel;
 import com.google.api.gax.grpc.InstantiatingGrpcChannelProvider;
@@ -22,6 +23,7 @@
 import com.google.api.generator.engine.ast.ConcreteReference;
 import com.google.api.generator.engine.ast.MethodDefinition;
 import com.google.api.generator.engine.ast.MethodInvocationExpr;
+import com.google.api.generator.engine.ast.PrimitiveValue;
 import com.google.api.generator.engine.ast.ScopeNode;
 import com.google.api.generator.engine.ast.StringObjectValue;
 import com.google.api.generator.engine.ast.TypeNode;
@@ -94,6 +96,43 @@ protected MethodDefinition createDefaultTransportTransportProviderBuilderMethod(
         .build();
   }
 
+  @Override
+  protected MethodDefinition createDefaultCredentialsProviderBuilderMethod() {
+    TypeNode returnType =
+        TypeNode.withReference(
+            ConcreteReference.withClazz(GoogleCredentialsProvider.Builder.class));
+    MethodInvocationExpr credsProviderBuilderExpr =
+        MethodInvocationExpr.builder()
+            .setStaticReferenceType(FIXED_TYPESTORE.get("GoogleCredentialsProvider"))
+            .setMethodName("newBuilder")
+            .build();
+    credsProviderBuilderExpr =
+        MethodInvocationExpr.builder()
+            .setExprReferenceExpr(credsProviderBuilderExpr)
+            .setMethodName("setScopesToApply")
+            .setArguments(DEFAULT_SERVICE_SCOPES_VAR_EXPR)
+            .setReturnType(returnType)
+            .build();
+    credsProviderBuilderExpr =
+        MethodInvocationExpr.builder()
+            .setExprReferenceExpr(credsProviderBuilderExpr)
+            .setMethodName("setUseJwtAccessWithScope")
+            .setArguments(
+                ValueExpr.withValue(
+                    PrimitiveValue.builder().setType(TypeNode.BOOLEAN).setValue("true").build()))
+            .setReturnType(returnType)
+            .build();
+    return MethodDefinition.builder()
+        .setHeaderCommentStatements(
+            SettingsCommentComposer.DEFAULT_CREDENTIALS_PROVIDER_BUILDER_METHOD_COMMENT)
+        .setScope(ScopeNode.PUBLIC)
+        .setIsStatic(true)
+        .setReturnType(returnType)
+        .setName("defaultCredentialsProviderBuilder")
+        .setReturnExpr(credsProviderBuilderExpr)
+        .build();
+  }
+
   @Override
   protected MethodDefinition createDefaultApiClientHeaderProviderBuilderMethod(
       Service service, TypeStore typeStore) {
diff --git a/test/integration/goldens/asset/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java b/test/integration/goldens/asset/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java
index 95b5de2ae8..b4009f799a 100644
--- a/test/integration/goldens/asset/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java
+++ b/test/integration/goldens/asset/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java
@@ -452,7 +452,9 @@ public static List<String> getDefaultServiceScopes() {
 
   /** Returns a builder for the default credentials for this service. */
   public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilder() {
-    return GoogleCredentialsProvider.newBuilder().setScopesToApply(DEFAULT_SERVICE_SCOPES);
+    return GoogleCredentialsProvider.newBuilder()
+        .setScopesToApply(DEFAULT_SERVICE_SCOPES)
+        .setUseJwtAccessWithScope(true);
   }
 
   /** Returns a builder for the default ChannelProvider for this service. */
diff --git a/test/integration/goldens/credentials/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStubSettings.java b/test/integration/goldens/credentials/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStubSettings.java
index 7a4cd49735..c2dce8808f 100644
--- a/test/integration/goldens/credentials/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStubSettings.java
+++ b/test/integration/goldens/credentials/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStubSettings.java
@@ -150,7 +150,9 @@ public static List<String> getDefaultServiceScopes() {
 
   /** Returns a builder for the default credentials for this service. */
   public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilder() {
-    return GoogleCredentialsProvider.newBuilder().setScopesToApply(DEFAULT_SERVICE_SCOPES);
+    return GoogleCredentialsProvider.newBuilder()
+        .setScopesToApply(DEFAULT_SERVICE_SCOPES)
+        .setUseJwtAccessWithScope(true);
   }
 
   /** Returns a builder for the default ChannelProvider for this service. */
diff --git a/test/integration/goldens/iam/com/google/iam/v1/stub/IAMPolicyStubSettings.java b/test/integration/goldens/iam/com/google/iam/v1/stub/IAMPolicyStubSettings.java
index f69f7ea460..c86c6e777f 100644
--- a/test/integration/goldens/iam/com/google/iam/v1/stub/IAMPolicyStubSettings.java
+++ b/test/integration/goldens/iam/com/google/iam/v1/stub/IAMPolicyStubSettings.java
@@ -137,7 +137,9 @@ public static List<String> getDefaultServiceScopes() {
 
   /** Returns a builder for the default credentials for this service. */
   public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilder() {
-    return GoogleCredentialsProvider.newBuilder().setScopesToApply(DEFAULT_SERVICE_SCOPES);
+    return GoogleCredentialsProvider.newBuilder()
+        .setScopesToApply(DEFAULT_SERVICE_SCOPES)
+        .setUseJwtAccessWithScope(true);
   }
 
   /** Returns a builder for the default ChannelProvider for this service. */
diff --git a/test/integration/goldens/kms/com/google/cloud/kms/v1/stub/KeyManagementServiceStubSettings.java b/test/integration/goldens/kms/com/google/cloud/kms/v1/stub/KeyManagementServiceStubSettings.java
index 77190adf46..eddd290338 100644
--- a/test/integration/goldens/kms/com/google/cloud/kms/v1/stub/KeyManagementServiceStubSettings.java
+++ b/test/integration/goldens/kms/com/google/cloud/kms/v1/stub/KeyManagementServiceStubSettings.java
@@ -657,7 +657,9 @@ public static List<String> getDefaultServiceScopes() {
 
   /** Returns a builder for the default credentials for this service. */
   public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilder() {
-    return GoogleCredentialsProvider.newBuilder().setScopesToApply(DEFAULT_SERVICE_SCOPES);
+    return GoogleCredentialsProvider.newBuilder()
+        .setScopesToApply(DEFAULT_SERVICE_SCOPES)
+        .setUseJwtAccessWithScope(true);
   }
 
   /** Returns a builder for the default ChannelProvider for this service. */
diff --git a/test/integration/goldens/library/com/google/cloud/example/library/v1/stub/LibraryServiceStubSettings.java b/test/integration/goldens/library/com/google/cloud/example/library/v1/stub/LibraryServiceStubSettings.java
index bb98270faa..7cfca24262 100644
--- a/test/integration/goldens/library/com/google/cloud/example/library/v1/stub/LibraryServiceStubSettings.java
+++ b/test/integration/goldens/library/com/google/cloud/example/library/v1/stub/LibraryServiceStubSettings.java
@@ -316,7 +316,9 @@ public static List<String> getDefaultServiceScopes() {
 
   /** Returns a builder for the default credentials for this service. */
   public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilder() {
-    return GoogleCredentialsProvider.newBuilder().setScopesToApply(DEFAULT_SERVICE_SCOPES);
+    return GoogleCredentialsProvider.newBuilder()
+        .setScopesToApply(DEFAULT_SERVICE_SCOPES)
+        .setUseJwtAccessWithScope(true);
   }
 
   /** Returns a builder for the default ChannelProvider for this service. */
diff --git a/test/integration/goldens/logging/com/google/cloud/logging/v2/stub/ConfigServiceV2StubSettings.java b/test/integration/goldens/logging/com/google/cloud/logging/v2/stub/ConfigServiceV2StubSettings.java
index 7c30359c19..801198dfb0 100644
--- a/test/integration/goldens/logging/com/google/cloud/logging/v2/stub/ConfigServiceV2StubSettings.java
+++ b/test/integration/goldens/logging/com/google/cloud/logging/v2/stub/ConfigServiceV2StubSettings.java
@@ -526,7 +526,9 @@ public static List<String> getDefaultServiceScopes() {
 
   /** Returns a builder for the default credentials for this service. */
   public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilder() {
-    return GoogleCredentialsProvider.newBuilder().setScopesToApply(DEFAULT_SERVICE_SCOPES);
+    return GoogleCredentialsProvider.newBuilder()
+        .setScopesToApply(DEFAULT_SERVICE_SCOPES)
+        .setUseJwtAccessWithScope(true);
   }
 
   /** Returns a builder for the default ChannelProvider for this service. */
diff --git a/test/integration/goldens/logging/com/google/cloud/logging/v2/stub/LoggingServiceV2StubSettings.java b/test/integration/goldens/logging/com/google/cloud/logging/v2/stub/LoggingServiceV2StubSettings.java
index bd2e07a52b..363ccfd96c 100644
--- a/test/integration/goldens/logging/com/google/cloud/logging/v2/stub/LoggingServiceV2StubSettings.java
+++ b/test/integration/goldens/logging/com/google/cloud/logging/v2/stub/LoggingServiceV2StubSettings.java
@@ -456,7 +456,9 @@ public static List<String> getDefaultServiceScopes() {
 
   /** Returns a builder for the default credentials for this service. */
   public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilder() {
-    return GoogleCredentialsProvider.newBuilder().setScopesToApply(DEFAULT_SERVICE_SCOPES);
+    return GoogleCredentialsProvider.newBuilder()
+        .setScopesToApply(DEFAULT_SERVICE_SCOPES)
+        .setUseJwtAccessWithScope(true);
   }
 
   /** Returns a builder for the default ChannelProvider for this service. */
diff --git a/test/integration/goldens/logging/com/google/cloud/logging/v2/stub/MetricsServiceV2StubSettings.java b/test/integration/goldens/logging/com/google/cloud/logging/v2/stub/MetricsServiceV2StubSettings.java
index 634af2b28c..b024bbbd83 100644
--- a/test/integration/goldens/logging/com/google/cloud/logging/v2/stub/MetricsServiceV2StubSettings.java
+++ b/test/integration/goldens/logging/com/google/cloud/logging/v2/stub/MetricsServiceV2StubSettings.java
@@ -224,7 +224,9 @@ public static List<String> getDefaultServiceScopes() {
 
   /** Returns a builder for the default credentials for this service. */
   public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilder() {
-    return GoogleCredentialsProvider.newBuilder().setScopesToApply(DEFAULT_SERVICE_SCOPES);
+    return GoogleCredentialsProvider.newBuilder()
+        .setScopesToApply(DEFAULT_SERVICE_SCOPES)
+        .setUseJwtAccessWithScope(true);
   }
 
   /** Returns a builder for the default ChannelProvider for this service. */
diff --git a/test/integration/goldens/pubsub/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java b/test/integration/goldens/pubsub/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java
index 95307e4d63..324ab41154 100644
--- a/test/integration/goldens/pubsub/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java
+++ b/test/integration/goldens/pubsub/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java
@@ -490,7 +490,9 @@ public static List<String> getDefaultServiceScopes() {
 
   /** Returns a builder for the default credentials for this service. */
   public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilder() {
-    return GoogleCredentialsProvider.newBuilder().setScopesToApply(DEFAULT_SERVICE_SCOPES);
+    return GoogleCredentialsProvider.newBuilder()
+        .setScopesToApply(DEFAULT_SERVICE_SCOPES)
+        .setUseJwtAccessWithScope(true);
   }
 
   /** Returns a builder for the default ChannelProvider for this service. */
diff --git a/test/integration/goldens/pubsub/com/google/cloud/pubsub/v1/stub/SchemaServiceStubSettings.java b/test/integration/goldens/pubsub/com/google/cloud/pubsub/v1/stub/SchemaServiceStubSettings.java
index 9c4e780cd8..4790e4acce 100644
--- a/test/integration/goldens/pubsub/com/google/cloud/pubsub/v1/stub/SchemaServiceStubSettings.java
+++ b/test/integration/goldens/pubsub/com/google/cloud/pubsub/v1/stub/SchemaServiceStubSettings.java
@@ -254,7 +254,9 @@ public static List<String> getDefaultServiceScopes() {
 
   /** Returns a builder for the default credentials for this service. */
   public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilder() {
-    return GoogleCredentialsProvider.newBuilder().setScopesToApply(DEFAULT_SERVICE_SCOPES);
+    return GoogleCredentialsProvider.newBuilder()
+        .setScopesToApply(DEFAULT_SERVICE_SCOPES)
+        .setUseJwtAccessWithScope(true);
   }
 
   /** Returns a builder for the default ChannelProvider for this service. */
diff --git a/test/integration/goldens/pubsub/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java b/test/integration/goldens/pubsub/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java
index c3b932cd11..a0803577d8 100644
--- a/test/integration/goldens/pubsub/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java
+++ b/test/integration/goldens/pubsub/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java
@@ -395,7 +395,9 @@ public static List<String> getDefaultServiceScopes() {
 
   /** Returns a builder for the default credentials for this service. */
   public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilder() {
-    return GoogleCredentialsProvider.newBuilder().setScopesToApply(DEFAULT_SERVICE_SCOPES);
+    return GoogleCredentialsProvider.newBuilder()
+        .setScopesToApply(DEFAULT_SERVICE_SCOPES)
+        .setUseJwtAccessWithScope(true);
   }
 
   /** Returns a builder for the default ChannelProvider for this service. */
diff --git a/test/integration/goldens/redis/com/google/cloud/redis/v1beta1/stub/CloudRedisStubSettings.java b/test/integration/goldens/redis/com/google/cloud/redis/v1beta1/stub/CloudRedisStubSettings.java
index 1314469600..3591a55a1e 100644
--- a/test/integration/goldens/redis/com/google/cloud/redis/v1beta1/stub/CloudRedisStubSettings.java
+++ b/test/integration/goldens/redis/com/google/cloud/redis/v1beta1/stub/CloudRedisStubSettings.java
@@ -306,7 +306,9 @@ public static List<String> getDefaultServiceScopes() {
 
   /** Returns a builder for the default credentials for this service. */
   public static GoogleCredentialsProvider.Builder defaultCredentialsProviderBuilder() {
-    return GoogleCredentialsProvider.newBuilder().setScopesToApply(DEFAULT_SERVICE_SCOPES);
+    return GoogleCredentialsProvider.newBuilder()
+        .setScopesToApply(DEFAULT_SERVICE_SCOPES)
+        .setUseJwtAccessWithScope(true);
   }
 
   /** Returns a builder for the default ChannelProvider for this service. */