diff --git a/docx-wasm/js/doc-props.ts b/docx-wasm/js/doc-props.ts
new file mode 100644
index 0000000..07c9a86
--- /dev/null
+++ b/docx-wasm/js/doc-props.ts
@@ -0,0 +1,14 @@
+export class DocProps {
+  _createdAt: string | null = null;
+  _updatedAt: string | null = null;
+
+  createdAt(date: string) {
+    this._createdAt = date;
+    return this;
+  }
+
+  updatedAt(date: string) {
+    this._updatedAt = date;
+    return this;
+  }
+}
diff --git a/docx-wasm/js/index.ts b/docx-wasm/js/index.ts
index 46176cd..e62de56 100644
--- a/docx-wasm/js/index.ts
+++ b/docx-wasm/js/index.ts
@@ -16,6 +16,7 @@ import { Numbering } from "./numbering";
 import { BookmarkStart } from "./bookmark-start";
 import { BookmarkEnd } from "./bookmark-end";
 import { Settings } from "./settings";
+import { DocProps } from "./doc-props";
 import { Styles } from "./styles";
 import { SectionProperty, PageMargin } from "./section-property";
 import { DocxJSON } from "./json";
@@ -56,6 +57,7 @@ export class Docx {
   abstractNumberings: AbstractNumbering[] = [];
   numberings: Numbering[] = [];
   settings: Settings = new Settings();
+  docProps: DocProps = new DocProps();
   sectionProperty: SectionProperty = new SectionProperty();
   styles = new Styles();
 
@@ -100,6 +102,16 @@ export class Docx {
     return this;
   }
 
+  createdAt(date: string) {
+    this.docProps.createdAt(date);
+    return this;
+  }
+
+  updatedAt(date: string) {
+    this.docProps.updatedAt(date);
+    return this;
+  }
+
   addDocVar(name: string, val: string) {
     this.settings.addDocVar(name, val);
     return this;
@@ -665,6 +677,14 @@ export class Docx {
       }
     }
 
+    if (this.docProps._createdAt) {
+      docx = docx.created_at(this.docProps._createdAt);
+    }
+
+    if (this.docProps._updatedAt) {
+      docx = docx.updated_at(this.docProps._updatedAt);
+    }
+
     return docx;
   }
 
diff --git a/docx-wasm/package.json b/docx-wasm/package.json
index 7ed7290..07d7753 100644
--- a/docx-wasm/package.json
+++ b/docx-wasm/package.json
@@ -1,6 +1,6 @@
 {
   "name": "docx-wasm",
-  "version": "0.0.137",
+  "version": "0.0.138",
   "main": "dist/node/index.js",
   "browser": "dist/web/index.js",
   "author": "bokuweb <bokuweb12@gmail.com>",
diff --git a/docx-wasm/src/doc.rs b/docx-wasm/src/doc.rs
index f28f217..274de30 100644
--- a/docx-wasm/src/doc.rs
+++ b/docx-wasm/src/doc.rs
@@ -43,6 +43,16 @@ impl Docx {
         self
     }
 
+    pub fn created_at(mut self, date: &str) -> Self {
+        self.0.doc_props = self.0.doc_props.created_at(date);
+        self
+    }
+
+    pub fn updated_at(mut self, date: &str) -> Self {
+        self.0.doc_props = self.0.doc_props.updated_at(date);
+        self
+    }
+
     pub fn doc_id(mut self, id: &str) -> Docx {
         self.0 = self.0.doc_id(id);
         self