diff --git a/CHANGES.txt b/CHANGES.txt
index 11c9dac3ef..48ef4700da 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,4 +1,5 @@
 5.0.1
+ * Add java.base/java.lang.reflect among opens for jvm11-client.options (CASSANDRA-19780)
 
 
 5.0-rc2
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