diff --git a/openapi/build.gradle.kts b/openapi/build.gradle.kts
index 7b22c303..6217481a 100644
--- a/openapi/build.gradle.kts
+++ b/openapi/build.gradle.kts
@@ -1,6 +1,6 @@
 dependencies {
   implementation(project(":server"))
-  api("io.swagger.core.v3:swagger-annotations:2.2.22")
+  api("io.swagger.core.v3:swagger-annotations:2.2.25")
 
   testImplementation(project(":json"))
   testImplementation(project(":jackson"))
diff --git a/openapi/src/OpenAPI.kt b/openapi/src/OpenAPI.kt
index 11fcc682..04cb0140 100644
--- a/openapi/src/OpenAPI.kt
+++ b/openapi/src/OpenAPI.kt
@@ -162,7 +162,7 @@ internal fun <T: Annotation> T.toNonEmptyValues(filter: (KProperty1<T, *>) -> Bo
   publicProperties.filter(filter).forEach { p ->
     when(val v = p.valueOf(this)) {
       "", false, 0, Int.MAX_VALUE, Int.MIN_VALUE, 0.0, Void::class.java, AccessMode.AUTO, RequiredMode.AUTO, AdditionalPropertiesValue.USE_ADDITIONAL_PROPERTIES_ANNOTATION -> null
-      is Enum<*> -> v.takeIf { v.name != "DEFAULT" }
+      is Enum<*> -> v.takeIf { v.name != "DEFAULT" && v.name != "AUTO" }
       is Annotation -> v.toNonEmptyValues().takeIf { it.isNotEmpty() }
       is Array<*> -> v.map { (it as? Annotation)?.toNonEmptyValues() ?: it }.takeIf { it.isNotEmpty() }
       else -> v
diff --git a/openapi/test/OpenAPITest.kt b/openapi/test/OpenAPITest.kt
index abbcab17..f4fcde80 100644
--- a/openapi/test/OpenAPITest.kt
+++ b/openapi/test/OpenAPITest.kt
@@ -164,7 +164,7 @@ class OpenAPITest {
   @Test fun `definition and security`() {
     @SecurityScheme(name = "bearerApiKey", type = SecuritySchemeType.HTTP, scheme = "bearer", bearerFormat = "API-Key", paramName = "Authorization")
     @OpenAPIDefinition(info = Info(title = "Mega API", version = "1.x"), security = [SecurityRequirement(name = "bearerApiKey")])
-    class MyRoutes {}
+    class MyRoutes
 
     mockk<HttpExchange>(relaxed = true).apply {
       every { fullUrl(any()) } returns URI("https://base")