diff --git a/doc/src/release_notes.rst b/doc/src/release_notes.rst
index 2783c32..e4d8267 100644
--- a/doc/src/release_notes.rst
+++ b/doc/src/release_notes.rst
@@ -12,10 +12,15 @@ Version 8.2.1 (June 2021)
 
 #)  Updated embedded ODPI-C to `version 4.2.1
     <https://oracle.github.io/odpi/doc/releasenotes.html#
-    version-4-2-1-tbd>`__.
+    version-4-2-1-june-1-2021>`__.
+#)  Added support for caching the database version in pooled connections with
+    Oracle Client 19 and earlier (later Oracle Clients handle this caching
+    internally). This optimization eliminates a round-trip previously often
+    required when reusing a pooled connection.
+#)  Fixed a regression with error messages when creating a connection fails.
 #)  Fixed crash when using the deprecated parameter name `keywordParameters`
     with :meth:`Cursor.callproc()`.
-#)  Improved test suite.
+#)  Improved documentation and the test suite.
 
 
 Version 8.2 (May 2021)
diff --git a/odpi b/odpi
index 9f4744f..e2e5f7a 160000
--- a/odpi
+++ b/odpi
@@ -1 +1 @@
-Subproject commit 9f4744fd2591f0274ae8c2bbc2a8bce8def6e11c
+Subproject commit e2e5f7ad1a17ee12b8055709326bd3c394cc94c8