diff --git a/src/test/kotlin/org/opensearch/indexmanagement/indexstatemanagement/IndexStateManagementRestTestCase.kt b/src/test/kotlin/org/opensearch/indexmanagement/indexstatemanagement/IndexStateManagementRestTestCase.kt
index 1e37cdf4b..68c25a6d6 100644
--- a/src/test/kotlin/org/opensearch/indexmanagement/indexstatemanagement/IndexStateManagementRestTestCase.kt
+++ b/src/test/kotlin/org/opensearch/indexmanagement/indexstatemanagement/IndexStateManagementRestTestCase.kt
@@ -379,7 +379,7 @@ abstract class IndexStateManagementRestTestCase : IndexManagementRestTestCase()
             }
             """.trimIndent()
         val response =
-            client().makeRequest(
+            adminClient().makeRequest(
                 "POST", "$INDEX_MANAGEMENT_INDEX/_search", emptyMap(),
                 StringEntity(request, ContentType.APPLICATION_JSON),
             )
@@ -394,7 +394,7 @@ abstract class IndexStateManagementRestTestCase : IndexManagementRestTestCase()
     }
 
     protected fun getManagedIndexConfigByDocId(id: String): ManagedIndexConfig? {
-        val response = client().makeRequest("GET", "$INDEX_MANAGEMENT_INDEX/_doc/$id")
+        val response = adminClient().makeRequest("GET", "$INDEX_MANAGEMENT_INDEX/_doc/$id")
         assertEquals("Request failed", RestStatus.OK, response.restStatus())
         val getResponse = GetResponse.fromXContent(createParser(jsonXContent, response.entity.content))
         assertTrue("Did not find managed index config", getResponse.isExists)
@@ -854,7 +854,7 @@ abstract class IndexStateManagementRestTestCase : IndexManagementRestTestCase()
         metadataId: String,
         header: BasicHeader = BasicHeader(HttpHeaders.CONTENT_TYPE, "application/json"),
     ): RollupMetadata {
-        val response = client().makeRequest("GET", "$INDEX_MANAGEMENT_INDEX/_doc/$metadataId", null, header)
+        val response = adminClient().makeRequest("GET", "$INDEX_MANAGEMENT_INDEX/_doc/$metadataId", null, header)
         assertEquals("Unable to get rollup metadata $metadataId", RestStatus.OK, response.restStatus())
 
         val parser = createParser(XContentType.JSON.xContent(), response.entity.content)
@@ -911,7 +911,7 @@ abstract class IndexStateManagementRestTestCase : IndexManagementRestTestCase()
         metadataId: String,
         header: BasicHeader = BasicHeader(HttpHeaders.CONTENT_TYPE, "application/json"),
     ): TransformMetadata {
-        val response = client().makeRequest("GET", "$INDEX_MANAGEMENT_INDEX/_doc/$metadataId", null, header)
+        val response = adminClient().makeRequest("GET", "$INDEX_MANAGEMENT_INDEX/_doc/$metadataId", null, header)
         assertEquals("Unable to get transform metadata $metadataId", RestStatus.OK, response.restStatus())
 
         val parser = createParser(XContentType.JSON.xContent(), response.entity.content)
diff --git a/src/test/kotlin/org/opensearch/indexmanagement/indexstatemanagement/resthandler/IndexStateManagementRestApiIT.kt b/src/test/kotlin/org/opensearch/indexmanagement/indexstatemanagement/resthandler/IndexStateManagementRestApiIT.kt
index a102d4e8e..f3ce9bc02 100644
--- a/src/test/kotlin/org/opensearch/indexmanagement/indexstatemanagement/resthandler/IndexStateManagementRestApiIT.kt
+++ b/src/test/kotlin/org/opensearch/indexmanagement/indexstatemanagement/resthandler/IndexStateManagementRestApiIT.kt
@@ -150,7 +150,7 @@ class IndexStateManagementRestApiIT : IndexStateManagementRestTestCase() {
     fun `test mappings after policy creation`() {
         createRandomPolicy()
 
-        val response = client().makeRequest("GET", "/$INDEX_MANAGEMENT_INDEX/_mapping")
+        val response = adminClient().makeRequest("GET", "/$INDEX_MANAGEMENT_INDEX/_mapping")
         val parserMap =
             createParser(XContentType.JSON.xContent(), response.entity.content).map() as Map<String, Map<String, Any>>
         val mappingsMap = parserMap[INDEX_MANAGEMENT_INDEX]!!["mappings"] as Map<String, Any>
@@ -271,7 +271,7 @@ class IndexStateManagementRestApiIT : IndexStateManagementRestTestCase() {
             }
             """.trimIndent()
         val response =
-            client().makeRequest(
+            adminClient().makeRequest(
                 "POST", "$INDEX_MANAGEMENT_INDEX/_search", emptyMap(),
                 StringEntity(request, ContentType.APPLICATION_JSON),
             )
diff --git a/src/test/kotlin/org/opensearch/indexmanagement/rollup/RollupRestTestCase.kt b/src/test/kotlin/org/opensearch/indexmanagement/rollup/RollupRestTestCase.kt
index 6e527abfb..12e75b4e3 100644
--- a/src/test/kotlin/org/opensearch/indexmanagement/rollup/RollupRestTestCase.kt
+++ b/src/test/kotlin/org/opensearch/indexmanagement/rollup/RollupRestTestCase.kt
@@ -209,7 +209,7 @@ abstract class RollupRestTestCase : IndexManagementRestTestCase() {
         refresh: Boolean = true,
         header: BasicHeader = BasicHeader(HttpHeaders.CONTENT_TYPE, "application/json"),
     ): RollupMetadata {
-        val response = client().makeRequest("GET", "$INDEX_MANAGEMENT_INDEX/_doc/$metadataId?refresh=$refresh", null, header)
+        val response = adminClient().makeRequest("GET", "$INDEX_MANAGEMENT_INDEX/_doc/$metadataId?refresh=$refresh", null, header)
         assertEquals("Unable to get rollup metadata $metadataId", RestStatus.OK, response.restStatus())
         return parseRollupMetadata(response)
     }
@@ -220,7 +220,7 @@ abstract class RollupRestTestCase : IndexManagementRestTestCase() {
         refresh: Boolean = true,
         header: BasicHeader = BasicHeader(HttpHeaders.CONTENT_TYPE, "application/json"),
     ): RollupMetadata {
-        val response = client().makeRequest("GET", "$INDEX_MANAGEMENT_INDEX/_doc/$metadataId?routing=$routingId&refresh=$refresh", null, header)
+        val response = adminClient().makeRequest("GET", "$INDEX_MANAGEMENT_INDEX/_doc/$metadataId?routing=$routingId&refresh=$refresh", null, header)
         assertEquals("Unable to get rollup metadata $metadataId", RestStatus.OK, response.restStatus())
 
         return parseRollupMetadata(response)