diff --git a/.changelog/49941.txt b/.changelog/49941.txt
new file mode 100644
index 000000000000..e9d681fa4edc
--- /dev/null
+++ b/.changelog/49941.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+resource/aws_redshiftserverless_workgroup: Allow `enable_large_strings_opt_in` config parameter
+```
diff --git a/internal/service/redshiftserverless/workgroup.go b/internal/service/redshiftserverless/workgroup.go
index 58310f697597..054e5a60245e 100644
--- a/internal/service/redshiftserverless/workgroup.go
+++ b/internal/service/redshiftserverless/workgroup.go
@@ -73,6 +73,8 @@ func resourceWorkgroup() *schema.Resource {
 									"auto_mv",
 									"datestyle",
 									"enable_case_sensitive_identifier", // "ValidationException: The parameter key enable_case_sensitivity_identifier isn't supported. Supported values: [[max_query_cpu_usage_percent, max_join_row_count, auto_mv, max_query_execution_time, max_query_queue_time, max_query_blocks_read, max_return_row_count, search_path, datestyle, max_query_cpu_time, max_io_skew, max_scan_row_count, query_group, enable_user_activity_logging, enable_case_sensitive_identifier, max_nested_loop_join_row_count, max_query_temp_blocks_to_disk, max_cpu_skew]]"
+									// https://docs.aws.amazon.com/redshift/latest/mgmt/behavior-changes.html
+									"enable_large_strings_opt_in",
 									"enable_user_activity_logging",
 									"query_group",
 									"search_path",