diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index ee01438030..ccb3d1c06c 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -855,7 +855,7 @@ bom {
 			]
 		}
 	}
-	library("Jetty", "12.0.8") {
+	library("Jetty", "12.0.9") {
 		group("org.eclipse.jetty.ee10") {
 			imports = [
 				"jetty-ee10-bom"
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/jetty/JettyEmbeddedWebAppContext.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/jetty/JettyEmbeddedWebAppContext.java
index d583483a3d..3bc9f30bbf 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/jetty/JettyEmbeddedWebAppContext.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/jetty/JettyEmbeddedWebAppContext.java
@@ -17,8 +17,8 @@
 package org.springframework.boot.web.embedded.jetty;
 
 import org.eclipse.jetty.ee10.servlet.ServletHandler;
-import org.eclipse.jetty.ee10.webapp.ClassMatcher;
 import org.eclipse.jetty.ee10.webapp.WebAppContext;
+import org.eclipse.jetty.util.ClassMatcher;
 
 /**
  * Jetty {@link WebAppContext} used by {@link JettyWebServer} to support deferred
@@ -29,8 +29,7 @@ import org.eclipse.jetty.ee10.webapp.WebAppContext;
 class JettyEmbeddedWebAppContext extends WebAppContext {
 
 	JettyEmbeddedWebAppContext() {
-		setServerClassMatcher(new ClassMatcher("org.springframework.boot.loader."));
-		// setTempDirectory(WebInfConfiguration.getCanonicalNameForWebAppTmpDir(this));
+		setHiddenClassMatcher(new ClassMatcher("org.springframework.boot.loader."));
 	}
 
 	@Override
diff --git a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/jetty/JettyServletWebServerFactoryTests.java b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/jetty/JettyServletWebServerFactoryTests.java
index 846be216ec..3bd6529897 100644
--- a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/jetty/JettyServletWebServerFactoryTests.java
+++ b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/jetty/JettyServletWebServerFactoryTests.java
@@ -45,7 +45,6 @@ import org.awaitility.Awaitility;
 import org.eclipse.jetty.ee10.servlet.ErrorPageErrorHandler;
 import org.eclipse.jetty.ee10.servlet.ServletHolder;
 import org.eclipse.jetty.ee10.webapp.AbstractConfiguration;
-import org.eclipse.jetty.ee10.webapp.ClassMatcher;
 import org.eclipse.jetty.ee10.webapp.Configuration;
 import org.eclipse.jetty.ee10.webapp.WebAppContext;
 import org.eclipse.jetty.server.AbstractConnector;
@@ -55,6 +54,7 @@ import org.eclipse.jetty.server.Handler;
 import org.eclipse.jetty.server.Server;
 import org.eclipse.jetty.server.ServerConnector;
 import org.eclipse.jetty.server.SslConnectionFactory;
+import org.eclipse.jetty.util.ClassMatcher;
 import org.eclipse.jetty.util.ssl.SslContextFactory;
 import org.eclipse.jetty.util.thread.QueuedThreadPool;
 import org.eclipse.jetty.util.thread.ThreadPool;
@@ -196,8 +196,8 @@ class JettyServletWebServerFactoryTests extends AbstractServletWebServerFactoryT
 	Configuration mockConfiguration(Class<? extends Configuration> type) {
 		Configuration mock = mock(type);
 		ClassMatcher classMatcher = new ClassMatcher();
-		given(mock.getSystemClasses()).willReturn(classMatcher);
-		given(mock.getServerClasses()).willReturn(classMatcher);
+		given(mock.getProtectedClasses()).willReturn(classMatcher);
+		given(mock.getHiddenClasses()).willReturn(classMatcher);
 		return mock;
 	}