diff --git a/module/spring-boot-webflux/src/main/java/org/springframework/boot/webflux/actuate/endpoint/web/AbstractWebFluxEndpointHandlerMapping.java b/module/spring-boot-webflux/src/main/java/org/springframework/boot/webflux/actuate/endpoint/web/AbstractWebFluxEndpointHandlerMapping.java
index 9e6d62bb392..72bd7471a0b 100644
--- a/module/spring-boot-webflux/src/main/java/org/springframework/boot/webflux/actuate/endpoint/web/AbstractWebFluxEndpointHandlerMapping.java
+++ b/module/spring-boot-webflux/src/main/java/org/springframework/boot/webflux/actuate/endpoint/web/AbstractWebFluxEndpointHandlerMapping.java
@@ -555,6 +555,7 @@ public abstract class AbstractWebFluxEndpointHandlerMapping extends RequestMappi
 			this.responseStatus = responseStatus;
 		}
 
+		@Reflective
 		Mono<Void> handle(ServerWebExchange exchange) {
 			ServerHttpResponse response = exchange.getResponse();
 			response.setStatusCode(this.responseStatus);
@@ -623,7 +624,7 @@ public abstract class AbstractWebFluxEndpointHandlerMapping extends RequestMappi
 		@Override
 		public void registerHints(RuntimeHints hints, @Nullable ClassLoader classLoader) {
 			this.reflectiveRegistrar.registerRuntimeHints(hints, WriteOperationHandler.class,
-					ReadOperationHandler.class);
+					ReadOperationHandler.class, CatchAllHandler.class);
 		}
 
 	}
diff --git a/module/spring-boot-webflux/src/test/java/org/springframework/boot/webflux/actuate/endpoint/web/AbstractWebFluxEndpointHandlerMappingTests.java b/module/spring-boot-webflux/src/test/java/org/springframework/boot/webflux/actuate/endpoint/web/AbstractWebFluxEndpointHandlerMappingTests.java
index 0b81c6272a6..1171854820a 100644
--- a/module/spring-boot-webflux/src/test/java/org/springframework/boot/webflux/actuate/endpoint/web/AbstractWebFluxEndpointHandlerMappingTests.java
+++ b/module/spring-boot-webflux/src/test/java/org/springframework/boot/webflux/actuate/endpoint/web/AbstractWebFluxEndpointHandlerMappingTests.java
@@ -45,6 +45,10 @@ class AbstractWebFluxEndpointHandlerMappingTests {
 			.onType(TypeReference
 				.of("org.springframework.boot.webflux.actuate.endpoint.web.AbstractWebFluxEndpointHandlerMapping.ReadOperationHandler")))
 			.accepts(runtimeHints);
+		assertThat(RuntimeHintsPredicates.reflection()
+			.onType(TypeReference
+				.of("org.springframework.boot.webflux.actuate.endpoint.web.AbstractWebFluxEndpointHandlerMapping.CatchAllHandler")))
+			.accepts(runtimeHints);
 	}
 
 }
diff --git a/module/spring-boot-webmvc/src/main/java/org/springframework/boot/webmvc/actuate/endpoint/web/AbstractWebMvcEndpointHandlerMapping.java b/module/spring-boot-webmvc/src/main/java/org/springframework/boot/webmvc/actuate/endpoint/web/AbstractWebMvcEndpointHandlerMapping.java
index b102879e893..19db92781a0 100644
--- a/module/spring-boot-webmvc/src/main/java/org/springframework/boot/webmvc/actuate/endpoint/web/AbstractWebMvcEndpointHandlerMapping.java
+++ b/module/spring-boot-webmvc/src/main/java/org/springframework/boot/webmvc/actuate/endpoint/web/AbstractWebMvcEndpointHandlerMapping.java
@@ -494,6 +494,7 @@ public abstract class AbstractWebMvcEndpointHandlerMapping extends RequestMappin
 			this.responseStatus = responseStatus;
 		}
 
+		@Reflective
 		void handle(HttpServletResponse response) {
 			response.setStatus(this.responseStatus.value());
 		}
@@ -559,7 +560,7 @@ public abstract class AbstractWebMvcEndpointHandlerMapping extends RequestMappin
 
 		@Override
 		public void registerHints(RuntimeHints hints, @Nullable ClassLoader classLoader) {
-			this.reflectiveRegistrar.registerRuntimeHints(hints, OperationHandler.class);
+			this.reflectiveRegistrar.registerRuntimeHints(hints, OperationHandler.class, CatchAllHandler.class);
 		}
 
 	}
diff --git a/module/spring-boot-webmvc/src/test/java/org/springframework/boot/webmvc/actuate/endpoint/web/AbstractWebMvcEndpointHandlerMappingTests.java b/module/spring-boot-webmvc/src/test/java/org/springframework/boot/webmvc/actuate/endpoint/web/AbstractWebMvcEndpointHandlerMappingTests.java
index c6a818cab55..c7398dbf853 100644
--- a/module/spring-boot-webmvc/src/test/java/org/springframework/boot/webmvc/actuate/endpoint/web/AbstractWebMvcEndpointHandlerMappingTests.java
+++ b/module/spring-boot-webmvc/src/test/java/org/springframework/boot/webmvc/actuate/endpoint/web/AbstractWebMvcEndpointHandlerMappingTests.java
@@ -40,6 +40,10 @@ class AbstractWebMvcEndpointHandlerMappingTests {
 			.onType(TypeReference
 				.of("org.springframework.boot.webmvc.actuate.endpoint.web.AbstractWebMvcEndpointHandlerMapping.OperationHandler")))
 			.accepts(runtimeHints);
+		assertThat(RuntimeHintsPredicates.reflection()
+			.onType(TypeReference
+				.of("org.springframework.boot.webmvc.actuate.endpoint.web.AbstractWebMvcEndpointHandlerMapping.CatchAllHandler")))
+			.accepts(runtimeHints);
 	}
 
 }