diff --git a/hibernate-core/src/main/java/org/hibernate/resource/transaction/backend/jta/internal/package-info.java b/hibernate-core/src/main/java/org/hibernate/resource/transaction/backend/jta/internal/package-info.java
new file mode 100644
index 0000000000..894b7d136c
--- /dev/null
+++ b/hibernate-core/src/main/java/org/hibernate/resource/transaction/backend/jta/internal/package-info.java
@@ -0,0 +1,16 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+
+/**
+ * Implementations of {@link org.hibernate.resource.transaction.spi.TransactionCoordinator}
+ * based on JTA.
+ * <p>
+ * The {@link org.hibernate.resource.transaction.backend.jta.internal.JtaTransactionAdapter}
+ * abstracts over access to JTA via {@link jakarta.transaction.UserTransaction} or via
+ * {@link jakarta.transaction.TransactionManager}.
+ */
+package org.hibernate.resource.transaction.backend.jta.internal;
diff --git a/hibernate-core/src/main/java/org/hibernate/resource/transaction/spi/package-info.java b/hibernate-core/src/main/java/org/hibernate/resource/transaction/spi/package-info.java
index 6439b3b771..cb1bcf0f36 100644
--- a/hibernate-core/src/main/java/org/hibernate/resource/transaction/spi/package-info.java
+++ b/hibernate-core/src/main/java/org/hibernate/resource/transaction/spi/package-info.java
@@ -7,5 +7,8 @@
 
 /**
  * Extended SPI contracts for the resource-level transaction capabilities of Hibernate.
+ * Underlies the {@link org.hibernate.Transaction} API.
+ *
+ * @see org.hibernate.resource.transaction.spi.TransactionCoordinator
  */
 package org.hibernate.resource.transaction.spi;