diff --git a/spring-boot/pom.xml b/spring-boot/pom.xml
index c76835bf488..2cc17dee875 100644
--- a/spring-boot/pom.xml
+++ b/spring-boot/pom.xml
@@ -321,11 +321,6 @@
 			<artifactId>mariadb-java-client</artifactId>
 			<scope>test</scope>
 		</dependency>
-		<dependency>
-			<groupId>io.netty</groupId>
-			<artifactId>netty-all</artifactId>
-			<scope>test</scope>
-		</dependency>
 		<dependency>
 			<groupId>org.postgresql</groupId>
 			<artifactId>postgresql</artifactId>
diff --git a/spring-boot/src/main/java/org/springframework/boot/web/client/RestTemplateBuilder.java b/spring-boot/src/main/java/org/springframework/boot/web/client/RestTemplateBuilder.java
index c3df825a521..dc224ee9e1f 100644
--- a/spring-boot/src/main/java/org/springframework/boot/web/client/RestTemplateBuilder.java
+++ b/spring-boot/src/main/java/org/springframework/boot/web/client/RestTemplateBuilder.java
@@ -72,8 +72,6 @@ public class RestTemplateBuilder {
 				"org.springframework.http.client.OkHttp3ClientHttpRequestFactory");
 		candidates.put("com.squareup.okhttp.OkHttpClient",
 				"org.springframework.http.client.OkHttpClientHttpRequestFactory");
-		candidates.put("io.netty.channel.EventLoopGroup",
-				"org.springframework.http.client.Netty4ClientHttpRequestFactory");
 		REQUEST_FACTORY_CANDIDATES = Collections.unmodifiableMap(candidates);
 	}
 
diff --git a/spring-boot/src/test/java/org/springframework/boot/web/client/RestTemplateBuilderTests.java b/spring-boot/src/test/java/org/springframework/boot/web/client/RestTemplateBuilderTests.java
index daa38124ed8..a2036f6ce76 100644
--- a/spring-boot/src/test/java/org/springframework/boot/web/client/RestTemplateBuilderTests.java
+++ b/spring-boot/src/test/java/org/springframework/boot/web/client/RestTemplateBuilderTests.java
@@ -31,7 +31,6 @@ import org.springframework.http.client.BufferingClientHttpRequestFactory;
 import org.springframework.http.client.ClientHttpRequestFactory;
 import org.springframework.http.client.ClientHttpRequestInterceptor;
 import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
-import org.springframework.http.client.Netty4ClientHttpRequestFactory;
 import org.springframework.http.client.OkHttp3ClientHttpRequestFactory;
 import org.springframework.http.client.SimpleClientHttpRequestFactory;
 import org.springframework.http.client.support.BasicAuthorizationInterceptor;
@@ -465,24 +464,6 @@ public class RestTemplateBuilderTests {
 				.isEqualTo(1234);
 	}
 
-	@Test
-	public void connectTimeoutCanBeConfiguredOnNetty4RequestFactory() {
-		ClientHttpRequestFactory requestFactory = this.builder
-				.requestFactory(Netty4ClientHttpRequestFactory.class)
-				.setConnectTimeout(1234).build().getRequestFactory();
-		assertThat(ReflectionTestUtils.getField(requestFactory, "connectTimeout"))
-				.isEqualTo(1234);
-	}
-
-	@Test
-	public void readTimeoutCanBeConfiguredOnNetty4RequestFactory() {
-		ClientHttpRequestFactory requestFactory = this.builder
-				.requestFactory(Netty4ClientHttpRequestFactory.class).setReadTimeout(1234)
-				.build().getRequestFactory();
-		assertThat(ReflectionTestUtils.getField(requestFactory, "readTimeout"))
-				.isEqualTo(1234);
-	}
-
 	@Test
 	public void connectTimeoutCanBeConfiguredOnOkHttp3RequestFactory() {
 		ClientHttpRequestFactory requestFactory = this.builder