diff --git a/datasources/src/test/java/org/opensearch/sql/datasources/transport/TransportPatchDataSourceActionTest.java b/datasources/src/test/java/org/opensearch/sql/datasources/transport/TransportPatchDataSourceActionTest.java
index d8fc2a8346..5e1e7df112 100644
--- a/datasources/src/test/java/org/opensearch/sql/datasources/transport/TransportPatchDataSourceActionTest.java
+++ b/datasources/src/test/java/org/opensearch/sql/datasources/transport/TransportPatchDataSourceActionTest.java
@@ -58,7 +58,7 @@ public void testDoExecute() {
         .onResponse(patchDataSourceActionResponseArgumentCaptor.capture());
     PatchDataSourceActionResponse patchDataSourceActionResponse =
         patchDataSourceActionResponseArgumentCaptor.getValue();
-    String responseAsJson = "\"Created DataSource with name test_datasource\"";
+    String responseAsJson = "\"Updated DataSource with name test_datasource\"";
     Assertions.assertEquals(responseAsJson, patchDataSourceActionResponse.getResult());
   }
 
diff --git a/docs/user/ppl/admin/datasources.rst b/docs/user/ppl/admin/datasources.rst
index 3682153b9d..bf37cc196d 100644
--- a/docs/user/ppl/admin/datasources.rst
+++ b/docs/user/ppl/admin/datasources.rst
@@ -93,6 +93,17 @@ we can remove authorization and other details in case of security disabled domai
         "allowedRoles" : ["prometheus_access"]
     }
 
+* Datasource modification PATCH API ("_plugins/_query/_datasources") ::
+
+    PATCH https://localhost:9200/_plugins/_query/_datasources
+    content-type: application/json
+    Authorization: Basic {{username}} {{password}}
+
+    {
+        "name" : "my_prometheus",
+        "allowedRoles" : ["all_access"]
+    }
+
 * Datasource Read GET API("_plugins/_query/_datasources/{{dataSourceName}}" ::
 
     GET https://localhost:9200/_plugins/_query/_datasources/my_prometheus
diff --git a/integ-test/src/test/java/org/opensearch/sql/datasource/DataSourceAPIsIT.java b/integ-test/src/test/java/org/opensearch/sql/datasource/DataSourceAPIsIT.java
index c22bb83189..2799282f7b 100644
--- a/integ-test/src/test/java/org/opensearch/sql/datasource/DataSourceAPIsIT.java
+++ b/integ-test/src/test/java/org/opensearch/sql/datasource/DataSourceAPIsIT.java
@@ -141,10 +141,10 @@ public void updateDataSourceAPITest() {
     Map<String, Object> updateDS =
         new HashMap<>(Map.of(NAME_FIELD, "update_prometheus", DESCRIPTION_FIELD, "test"));
     Request patchRequest = getPatchDataSourceRequest(updateDS);
-    Response patchResponse = client().performRequest(updateRequest);
+    Response patchResponse = client().performRequest(patchRequest);
     Assert.assertEquals(200, patchResponse.getStatusLine().getStatusCode());
     String patchResponseString = getResponseBody(updateResponse);
-    Assert.assertEquals("\"Updated DataSource with name update_prometheus\"", updateResponseString);
+    Assert.assertEquals("\"Updated DataSource with name update_prometheus\"", patchResponseString);
 
     // Datasource is not immediately updated. so introducing a sleep of 2s.
     Thread.sleep(2000);
@@ -152,11 +152,11 @@ public void updateDataSourceAPITest() {
     // get datasource to validate the modification.
     // get datasource
     Request getRequestAfterPatch = getFetchDataSourceRequest("update_prometheus");
-    Response getResponseAfterPatch = client().performRequest(getRequest);
-    Assert.assertEquals(200, getResponse.getStatusLine().getStatusCode());
+    Response getResponseAfterPatch = client().performRequest(getRequestAfterPatch);
+    Assert.assertEquals(200, getResponseAfterPatch.getStatusLine().getStatusCode());
     String getResponseStringAfterPatch = getResponseBody(getResponse);
     DataSourceMetadata dataSourceMetadataAfterPatch =
-        new Gson().fromJson(getResponseString, DataSourceMetadata.class);
+        new Gson().fromJson(getResponseStringAfterPatch, DataSourceMetadata.class);
     Assert.assertEquals(
         "https://randomtest.com:9090",
         dataSourceMetadataAfterPatch.getProperties().get("prometheus.uri"));