diff --git a/build.gradle b/build.gradle
index 0a29e8c93e..67d5c6df42 100644
--- a/build.gradle
+++ b/build.gradle
@@ -665,6 +665,9 @@ dependencies {
     integrationTestImplementation "org.apache.httpcomponents:httpcore:4.4.13"
     integrationTestImplementation "org.apache.httpcomponents:httpasyncclient:4.1.5"
 
+    //Checkstyle
+    checkstyle 'com.puppycrawl.tools:checkstyle:10.12.1'
+
     //spotless
     implementation('com.google.googlejavaformat:google-java-format:1.17.0') {
         exclude group: 'com.google.guava'
diff --git a/src/integrationTest/java/org/opensearch/test/framework/testplugins/AbstractRestHandler.java b/src/integrationTest/java/org/opensearch/test/framework/testplugins/AbstractRestHandler.java
index e92468af98..2f88585b22 100644
--- a/src/integrationTest/java/org/opensearch/test/framework/testplugins/AbstractRestHandler.java
+++ b/src/integrationTest/java/org/opensearch/test/framework/testplugins/AbstractRestHandler.java
@@ -1,12 +1,12 @@
 /*
- * Copyright OpenSearch Contributors
- * SPDX-License-Identifier: Apache-2.0
- *
- * The OpenSearch Contributors require contributions made to
- * this file be licensed under the Apache-2.0 license or a
- * compatible open source license.
- *
- */
+* Copyright OpenSearch Contributors
+* SPDX-License-Identifier: Apache-2.0
+*
+* The OpenSearch Contributors require contributions made to
+* this file be licensed under the Apache-2.0 license or a
+* compatible open source license.
+*
+*/
 package org.opensearch.test.framework.testplugins;
 
 import org.opensearch.ExceptionsHelper;
diff --git a/src/main/java/org/opensearch/security/dlic/rest/validation/EndpointValidator.java b/src/main/java/org/opensearch/security/dlic/rest/validation/EndpointValidator.java
index e4b08b8c3f..74833c8a38 100644
--- a/src/main/java/org/opensearch/security/dlic/rest/validation/EndpointValidator.java
+++ b/src/main/java/org/opensearch/security/dlic/rest/validation/EndpointValidator.java
@@ -1,12 +1,12 @@
 /*
- * Copyright OpenSearch Contributors
- * SPDX-License-Identifier: Apache-2.0
- *
- * The OpenSearch Contributors require contributions made to
- * this file be licensed under the Apache-2.0 license or a
- * compatible open source license.
- *
- */
+* Copyright OpenSearch Contributors
+* SPDX-License-Identifier: Apache-2.0
+*
+* The OpenSearch Contributors require contributions made to
+* this file be licensed under the Apache-2.0 license or a
+* compatible open source license.
+*
+*/
 package org.opensearch.security.dlic.rest.validation;
 
 import org.opensearch.core.rest.RestStatus;
diff --git a/src/test/java/org/opensearch/security/dlic/rest/api/AccountApiActionConfigValidationsTest.java b/src/test/java/org/opensearch/security/dlic/rest/api/AccountApiActionConfigValidationsTest.java
index 99c6359b45..3c9e773f96 100644
--- a/src/test/java/org/opensearch/security/dlic/rest/api/AccountApiActionConfigValidationsTest.java
+++ b/src/test/java/org/opensearch/security/dlic/rest/api/AccountApiActionConfigValidationsTest.java
@@ -1,12 +1,12 @@
 /*
- * Copyright OpenSearch Contributors
- * SPDX-License-Identifier: Apache-2.0
- *
- * The OpenSearch Contributors require contributions made to
- * this file be licensed under the Apache-2.0 license or a
- * compatible open source license.
- *
- */
+* Copyright OpenSearch Contributors
+* SPDX-License-Identifier: Apache-2.0
+*
+* The OpenSearch Contributors require contributions made to
+* this file be licensed under the Apache-2.0 license or a
+* compatible open source license.
+*
+*/
 package org.opensearch.security.dlic.rest.api;
 
 import com.fasterxml.jackson.databind.node.ObjectNode;
diff --git a/src/test/java/org/opensearch/security/dlic/rest/api/ActionGroupsApiActionValidationTest.java b/src/test/java/org/opensearch/security/dlic/rest/api/ActionGroupsApiActionValidationTest.java
index 82692b5fa3..a62797730e 100644
--- a/src/test/java/org/opensearch/security/dlic/rest/api/ActionGroupsApiActionValidationTest.java
+++ b/src/test/java/org/opensearch/security/dlic/rest/api/ActionGroupsApiActionValidationTest.java
@@ -1,12 +1,12 @@
 /*
- * Copyright OpenSearch Contributors
- * SPDX-License-Identifier: Apache-2.0
- *
- * The OpenSearch Contributors require contributions made to
- * this file be licensed under the Apache-2.0 license or a
- * compatible open source license.
- *
- */
+* Copyright OpenSearch Contributors
+* SPDX-License-Identifier: Apache-2.0
+*
+* The OpenSearch Contributors require contributions made to
+* this file be licensed under the Apache-2.0 license or a
+* compatible open source license.
+*
+*/
 package org.opensearch.security.dlic.rest.api;
 
 import org.junit.Before;