diff --git a/src/test/java/org/opensearch/security/InitializationIntegrationTests.java b/src/test/java/org/opensearch/security/InitializationIntegrationTests.java
index a5f4ff6dba..79a32aec63 100644
--- a/src/test/java/org/opensearch/security/InitializationIntegrationTests.java
+++ b/src/test/java/org/opensearch/security/InitializationIntegrationTests.java
@@ -178,7 +178,7 @@ public void testWhoAmIForceHttp1() throws Exception {
             Response whoAmIRes = restHighLevelClient.getLowLevelClient().performRequest(new Request("GET", "/_plugins/_security/whoami"));
             assertThat(200, is(whoAmIRes.getStatusLine().getStatusCode()));
             // The HTTP/1.1 is forced and should be used instead
-            assertThat(HttpVersion.HTTP_1_1, is(whoAmIRes.getStatusLine().getProtocolVersion()));
+            assertThat(whoAmIRes.getStatusLine().getProtocolVersion(), is(HttpVersion.HTTP_1_1));
             JsonNode whoAmIResNode = DefaultObjectMapper.objectMapper.readTree(whoAmIRes.getEntity().getContent());
             String whoAmIResponsePayload = whoAmIResNode.toPrettyString();
             assertThat(whoAmIResponsePayload, whoAmIResNode.get("dn").asText(), is("CN=spock,OU=client,O=client,L=Test,C=DE"));
diff --git a/src/test/java/org/opensearch/security/test/AbstractSecurityUnitTest.java b/src/test/java/org/opensearch/security/test/AbstractSecurityUnitTest.java
index ec4525eb30..aa134ad1e1 100644
--- a/src/test/java/org/opensearch/security/test/AbstractSecurityUnitTest.java
+++ b/src/test/java/org/opensearch/security/test/AbstractSecurityUnitTest.java
@@ -44,8 +44,8 @@
 import com.carrotsearch.randomizedtesting.annotations.ThreadLeakScope.Scope;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
+import org.apache.hc.client5.http.config.TlsConfig;
 import org.apache.hc.client5.http.impl.nio.PoolingAsyncClientConnectionManagerBuilder;
-import org.apache.hc.client5.http.nio.AsyncClientConnectionManager;
 import org.apache.hc.client5.http.ssl.ClientTlsStrategyBuilder;
 import org.apache.hc.client5.http.ssl.NoopHostnameVerifier;
 import org.apache.hc.core5.function.Factory;
@@ -197,14 +197,13 @@ public TlsDetails create(final SSLEngine sslEngine) {
                     })
                     .build();
 
-                final AsyncClientConnectionManager cm = PoolingAsyncClientConnectionManagerBuilder.create()
-                    .setTlsStrategy(tlsStrategy)
-                    .build();
-                builder.setConnectionManager(cm);
+                final PoolingAsyncClientConnectionManagerBuilder cm = PoolingAsyncClientConnectionManagerBuilder.create()
+                    .setTlsStrategy(tlsStrategy);
+
                 if (httpVersionPolicy != null) {
-                    builder.setVersionPolicy(httpVersionPolicy);
+                    cm.setDefaultTlsConfig(TlsConfig.custom().setVersionPolicy(httpVersionPolicy).build());
                 }
-                return builder;
+                return builder.setConnectionManager(cm.build());
             });
             return new RestHighLevelClient(restClientBuilder);
         } catch (Exception e) {
diff --git a/src/test/java/org/opensearch/security/test/helper/rest/RestHelper.java b/src/test/java/org/opensearch/security/test/helper/rest/RestHelper.java
index 1710a93875..81dd89badf 100644
--- a/src/test/java/org/opensearch/security/test/helper/rest/RestHelper.java
+++ b/src/test/java/org/opensearch/security/test/helper/rest/RestHelper.java
@@ -381,7 +381,9 @@ public TlsDetails create(final SSLEngine sslEngine) {
             hcb.setConnectionManager(cm);
         }
 
-        final RequestConfig.Builder requestConfigBuilder = RequestConfig.custom().setResponseTimeout(Timeout.ofSeconds(60));
+        final RequestConfig.Builder requestConfigBuilder = RequestConfig.custom()
+            .setResponseTimeout(Timeout.ofSeconds(60))
+            .setProtocolUpgradeEnabled(false);
 
         return hcb.setDefaultRequestConfig(requestConfigBuilder.build()).disableAutomaticRetries().build();
     }