diff --git a/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/FeignAutoConfiguration.java b/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/FeignAutoConfiguration.java
index 972629ad..90f6c4db 100644
--- a/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/FeignAutoConfiguration.java
+++ b/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/FeignAutoConfiguration.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2022 the original author or authors.
+ * Copyright 2013-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,6 +24,7 @@ import java.time.Duration;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
 
 import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.SSLContext;
@@ -261,7 +262,8 @@ public class FeignAutoConfiguration {
 			int connectTimeout = httpClientProperties.getConnectionTimeout();
 			boolean disableSslValidation = httpClientProperties.isDisableSslValidation();
 			Duration readTimeout = httpClientProperties.getOkHttp().getReadTimeout();
-			List<Protocol> protocols = httpClientProperties.getOkHttp().getProtocols();
+			List<Protocol> protocols = httpClientProperties.getOkHttp().getProtocols().stream().map(Protocol::valueOf)
+					.collect(Collectors.toList());
 			if (disableSslValidation) {
 				disableSsl(builder);
 			}
diff --git a/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/FeignHttpClientProperties.java b/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/FeignHttpClientProperties.java
index 63c9b9aa..0e26cde1 100644
--- a/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/FeignHttpClientProperties.java
+++ b/spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/support/FeignHttpClientProperties.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2022 the original author or authors.
+ * Copyright 2013-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -340,8 +340,9 @@ public class FeignHttpClientProperties {
 
 		/**
 		 * Configure the protocols used by this client to communicate with remote servers.
+		 * Uses {@link String} values of {@link Protocol}.
 		 */
-		private List<Protocol> protocols = List.of(Protocol.HTTP_2, Protocol.HTTP_1_1);
+		private List<String> protocols = List.of("HTTP_2", "HTTP_1_1");
 
 		public Duration getReadTimeout() {
 			return readTimeout;
@@ -351,11 +352,11 @@ public class FeignHttpClientProperties {
 			this.readTimeout = readTimeout;
 		}
 
-		public List<Protocol> getProtocols() {
+		public List<String> getProtocols() {
 			return protocols;
 		}
 
-		public void setProtocols(List<Protocol> protocols) {
+		public void setProtocols(List<String> protocols) {
 			this.protocols = protocols;
 		}
 
diff --git a/spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/protocol/FeignOkProtocolsTests.java b/spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/protocol/FeignOkHttpProtocolsTests.java
similarity index 95%
rename from spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/protocol/FeignOkProtocolsTests.java
rename to spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/protocol/FeignOkHttpProtocolsTests.java
index 951fd062..5e0393c8 100644
--- a/spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/protocol/FeignOkProtocolsTests.java
+++ b/spring-cloud-openfeign-core/src/test/java/org/springframework/cloud/openfeign/protocol/FeignOkHttpProtocolsTests.java
@@ -40,13 +40,13 @@ import static org.assertj.core.api.Assertions.assertThat;
 /**
  * @author changjin wei(魏昌进)
  */
-@SpringBootTest(classes = FeignOkProtocolsTests.Application.class, webEnvironment = WebEnvironment.RANDOM_PORT,
+@SpringBootTest(classes = FeignOkHttpProtocolsTests.Application.class, webEnvironment = WebEnvironment.RANDOM_PORT,
 		value = { "spring.application.name=feignclienttest", "spring.cloud.openfeign.circuitbreaker.enabled=false",
 				"spring.cloud.openfeign.httpclient.hc5.enabled=false", "spring.cloud.openfeign.okhttp.enabled=true",
 				"spring.cloud.httpclientfactories.ok.enabled=true", "spring.cloud.loadbalancer.retry.enabled=false",
 				"server.http2.enabled=true", "spring.cloud.openfeign.httpclient.okhttp.protocols=H2_PRIOR_KNOWLEDGE" })
 @DirtiesContext
-class FeignOkProtocolsTests {
+class FeignOkHttpProtocolsTests {
 
 	@Autowired
 	private Client feignClient;