diff --git a/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/boot/FastBootMetadataBuilder.java b/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/boot/FastBootMetadataBuilder.java
index 44ea98d385395e..05353c01bffe46 100644
--- a/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/boot/FastBootMetadataBuilder.java
+++ b/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/boot/FastBootMetadataBuilder.java
@@ -19,6 +19,7 @@
 import static org.hibernate.jpa.AvailableSettings.COLLECTION_CACHE_PREFIX;
 import static org.hibernate.jpa.AvailableSettings.PERSISTENCE_UNIT_NAME;
 
+import java.lang.reflect.InvocationTargetException;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Iterator;
@@ -603,8 +604,8 @@ private void applyMetadataBuilderContributor() {
 
         if (metadataBuilderContributorImplClass != null) {
             try {
-                metadataBuilderContributor = metadataBuilderContributorImplClass.newInstance();
-            } catch (InstantiationException | IllegalAccessException e) {
+                metadataBuilderContributor = metadataBuilderContributorImplClass.getDeclaredConstructor().newInstance();
+            } catch (InstantiationException | IllegalAccessException | NoSuchMethodException | InvocationTargetException e) {
                 throw new IllegalArgumentException("The MetadataBuilderContributor class ["
                         + metadataBuilderContributorImplClass + "] could not be instantiated!", e);
             }
diff --git a/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/boot/RecordableBootstrapFactory.java b/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/boot/RecordableBootstrapFactory.java
index 26ddc5648c3271..13dce20f0ac6b0 100644
--- a/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/boot/RecordableBootstrapFactory.java
+++ b/extensions/hibernate-orm/runtime/src/main/java/io/quarkus/hibernate/orm/runtime/boot/RecordableBootstrapFactory.java
@@ -1,5 +1,7 @@
 package io.quarkus.hibernate.orm.runtime.boot;
 
+import java.lang.reflect.InvocationTargetException;
+
 import org.hibernate.boot.registry.BootstrapServiceRegistry;
 import org.hibernate.boot.registry.classloading.spi.ClassLoaderService;
 import org.hibernate.boot.registry.internal.BootstrapServiceRegistryImpl;
@@ -51,9 +53,10 @@ private static InitialInitiatorListProvider initReactiveListProviderMaybe() {
             //Use reflection as we don't want the Hibernate ORM extension to depend on the Hibernate Reactive extension:
             final Class<?> forName = Class
                     .forName("io.quarkus.hibernate.reactive.runtime.boot.registry.ReactiveHibernateInitiatorListProvider");
-            final Object o = forName.newInstance();
+            final Object o = forName.getDeclaredConstructor().newInstance();
             return (InitialInitiatorListProvider) o;
-        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException e) {
+        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | NoSuchMethodException
+                | InvocationTargetException e) {
             //Be silent as this is a static initializer: most likely the Hibernate Reactive extension is
             //not on the classpath, which implies we won't need this.
             return null;