diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 2d772daec2..7c462a6cf3 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -1121,7 +1121,7 @@ bom {
 			releaseNotes("https://github.com/apache/logging-log4j2/releases/tag/rel%2F{version}")
 		}
 	}
-	library("Logback", "1.5.8") {
+	library("Logback", "1.5.10") {
 		group("ch.qos.logback") {
 			modules = [
 				"logback-classic",
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/LogbackLoggingSystem.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/LogbackLoggingSystem.java
index cddd864a06..0f27d1dad1 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/LogbackLoggingSystem.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/LogbackLoggingSystem.java
@@ -84,17 +84,20 @@ public class LogbackLoggingSystem extends AbstractLoggingSystem implements BeanF
 
 	private static final String CONFIGURATION_FILE_PROPERTY = "logback.configurationFile";
 
-	private static final LogLevels<Level> LEVELS = new LogLevels<>();
+	private static final LogLevels<Level> LEVELS = createLogLevels();
 
-	static {
-		LEVELS.map(LogLevel.TRACE, Level.TRACE);
-		LEVELS.map(LogLevel.TRACE, Level.ALL);
-		LEVELS.map(LogLevel.DEBUG, Level.DEBUG);
-		LEVELS.map(LogLevel.INFO, Level.INFO);
-		LEVELS.map(LogLevel.WARN, Level.WARN);
-		LEVELS.map(LogLevel.ERROR, Level.ERROR);
-		LEVELS.map(LogLevel.FATAL, Level.ERROR);
-		LEVELS.map(LogLevel.OFF, Level.OFF);
+	@SuppressWarnings("deprecation")
+	private static LogLevels<Level> createLogLevels() {
+		LogLevels<Level> levels = new LogLevels<>();
+		levels.map(LogLevel.TRACE, Level.TRACE);
+		levels.map(LogLevel.TRACE, Level.ALL);
+		levels.map(LogLevel.DEBUG, Level.DEBUG);
+		levels.map(LogLevel.INFO, Level.INFO);
+		levels.map(LogLevel.WARN, Level.WARN);
+		levels.map(LogLevel.ERROR, Level.ERROR);
+		levels.map(LogLevel.FATAL, Level.ERROR);
+		levels.map(LogLevel.OFF, Level.OFF);
+		return levels;
 	}
 
 	private static final TurboFilter FILTER = new TurboFilter() {
diff --git a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/logback/LogbackLoggingSystemTests.java b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/logback/LogbackLoggingSystemTests.java
index 65adc53a10..7e98393139 100644
--- a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/logback/LogbackLoggingSystemTests.java
+++ b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/logback/LogbackLoggingSystemTests.java
@@ -288,6 +288,7 @@ class LogbackLoggingSystemTests extends AbstractLoggingSystemTests {
 	}
 
 	@Test
+	@Deprecated(since = "3.3.5", forRemoval = true)
 	void getLoggerConfigurationForALL() {
 		this.loggingSystem.beforeInitialize();
 		initialize(this.initializationContext, null, null);