diff --git a/viewsh-module-ops/viewsh-module-ops-biz/src/main/java/com/viewsh/module/ops/infrastructure/vsp/config/VspNotifyConfig.java b/viewsh-module-ops/viewsh-module-ops-biz/src/main/java/com/viewsh/module/ops/infrastructure/vsp/config/VspNotifyConfig.java
index f617d12..1637758 100644
--- a/viewsh-module-ops/viewsh-module-ops-biz/src/main/java/com/viewsh/module/ops/infrastructure/vsp/config/VspNotifyConfig.java
+++ b/viewsh-module-ops/viewsh-module-ops-biz/src/main/java/com/viewsh/module/ops/infrastructure/vsp/config/VspNotifyConfig.java
@@ -16,6 +16,7 @@ public class VspNotifyConfig {
     @Bean(value = "vspRestTemplate", defaultCandidate = false)
     public RestTemplate vspRestTemplate(VspNotifyProperties properties) {
         HttpClient httpClient = HttpClient.newBuilder()
+                .version(HttpClient.Version.HTTP_1_1)
                 .connectTimeout(Duration.ofMillis(properties.getConnectTimeout()))
                 .build();
         JdkClientHttpRequestFactory factory = new JdkClientHttpRequestFactory(httpClient);