diff --git a/docs/src/main/sphinx/connector/delta-lake.rst b/docs/src/main/sphinx/connector/delta-lake.rst
index 26ff4ce584c4..a267b72b5b00 100644
--- a/docs/src/main/sphinx/connector/delta-lake.rst
+++ b/docs/src/main/sphinx/connector/delta-lake.rst
@@ -294,6 +294,11 @@ writing data. Data types may not map the same way in both directions between
 Trino and the data source. Refer to the following sections for type mapping in
 each direction.
 
+See the `Delta Transaction Log specification
+<https://github.com/delta-io/delta/blob/master/PROTOCOL.md#primitive-types>`_
+for more information about supported data types in the Delta Lake table format
+specification.
+
 Delta Lake to Trino type mapping
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^