diff --git a/README.md b/README.md
index 4084953..13f5ddc 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ Autogenerated classes for reading and writing CWL objects using the D language.
 
 It integrates with [schema-salad-d](https://github.com/tom-tan/schema-salad-d) and provides the following features:
 
-- Support almost all the CWL v1.0, v1.1 and v1.2 documents
+- Support all the CWL v1.0, v1.1 and v1.2 documents
 - Load YAML files and nodes to generate corresponding D objects
 - Store D object for CWL to YAML nodes
 
@@ -82,6 +82,3 @@ It checks that CWL documents in [`resources`](resources) can be loaded with pars
 ```console
 $ dub test
 ```
-
-## Future plan
-- Support [extension fields](https://www.commonwl.org/v1.2/CommandLineTool.html#Extensions_and_metadata)
diff --git a/dub.json b/dub.json
index 70a480e..c9d198c 100644
--- a/dub.json
+++ b/dub.json
@@ -4,7 +4,7 @@
 	],
 	"copyright": "Copyright © 2022, Tomoya Tanjo",
 	"dependencies": {
-		"schema-salad-d": "~>1.2.0"
+		"schema-salad-d": "~>1.2.1"
 	},
 	"description": "Autogenerated classes for reading and writing CWL objects using the D language.",
 	"homepage": "https://github.com/common-workflow-lab/cwl-d-auto",
diff --git a/dub.selections.json b/dub.selections.json
index edb291b..2db7c2a 100644
--- a/dub.selections.json
+++ b/dub.selections.json
@@ -5,7 +5,7 @@
 		"cachetools": "0.4.1",
 		"dyaml": "0.10.0",
 		"requests": "2.1.3",
-		"schema-salad-d": "1.2.0",
+		"schema-salad-d": "1.2.1",
 		"test_allocator": "0.3.4",
 		"tinyendian": "0.2.0",
 		"unit-threaded": "0.10.8"