diff --git a/CHANGES.txt b/CHANGES.txt
index d70641781a..3f24dc5f30 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -61,6 +61,7 @@
  * Add the ability to disable bulk loading of SSTables (CASSANDRA-18781)
  * Clean up obsolete functions and simplify cql_version handling in cqlsh (CASSANDRA-18787)
 Merged from 5.0:
+ * Add java.base/java.lang.reflect among opens for jvm11-client.options (CASSANDRA-19780)
  * Move bcpkix-jdk18on to build dependencies, update to 1.78 and explicitly enumerate transitive dependencies (CASSANDRA-19739)
  * Avoid streams in the common case for UpdateTransaction creation (CASSANDRA-19675)
  * Only wait until native_transport_timeout for dispatcher to finish (CASSANDRA-19697)
diff --git a/conf/jvm11-clients.options b/conf/jvm11-clients.options
index aeca2c3f50..3d59816c04 100644
--- a/conf/jvm11-clients.options
+++ b/conf/jvm11-clients.options
@@ -43,5 +43,6 @@
 --add-opens java.base/jdk.internal.module=ALL-UNNAMED
 --add-opens java.base/jdk.internal.util.jar=ALL-UNNAMED
 --add-opens jdk.management/com.sun.management.internal=ALL-UNNAMED
+--add-opens java.base/java.lang.reflect=ALL-UNNAMED
 
 # The newline in the end of file is intentional