diff --git a/PDFApp.js b/PDFApp.js
index 3f608ae..f26711f 100644
--- a/PDFApp.js
+++ b/PDFApp.js
@@ -84,16 +84,16 @@ function getMetadata() {
  * ### Description
  * Update PDF metadata of a PDF blob.
  * 
- * @param {Object} object Object for updading PDF metadata.
+ * @param {Object} object Object for updating PDF metadata.
  * @return {promise} Updated PDF blob.
  */
-function udpateMetadata(object) {
+function updateMetadata(object) {
   if (!this.pdfBlob) {
     throw new Error("Please set the source PDF blob using the setPDFBlob method.");
   }
   const pdfBlob = this.pdfBlob;
   const PDFA = new PDFApp(this);
-  return PDFA.udpateMetadata(pdfBlob, object);
+  return PDFA.updateMetadata(pdfBlob, object);
 }
 
 /**
@@ -351,7 +351,7 @@ class PDFApp {
    * @param {Object} object Object including the values for updating metadata.
    * @return {promise} PDF Blob.
    */
-  udpateMetadata(pdfBlob, object) {
+  updateMetadata(pdfBlob, object) {
     if (typeof object != "object" || Object.keys(object).length == 0) {
       throw new Error("Please set valid object for updating PDF metadata.");
     }
@@ -1132,4 +1132,4 @@ class PDFApp {
   async getPDFObjectFromBlob_(blob) {
     return await this.PDFLib.PDFDocument.load(new Uint8Array(blob.getBytes()));
   }
-}
+}
\ No newline at end of file
diff --git a/README.md b/README.md
index 71d759e..105e6f8 100644
--- a/README.md
+++ b/README.md
@@ -73,7 +73,7 @@ This library uses the following 3 scopes.
 |||
 | [exportPages](#exportpages) | Export specific pages from a PDF blob. |
 | [getMetadata](#getmetadata) | Get PDF metadata from a PDF blob. |
-| [udpateMetadata](#udpatemetadata) | Update PDF metadata of a PDF blob. |
+| [updateMetadata](#updateMetadata) | Update PDF metadata of a PDF blob. |
 | [reorderPages](#reorderpages) | Reorder pages of a PDF blob. |
 | [mergePDFs](#mergepdfs) | Merge multiple PDF files in a single PDF. |
 | [convertPDFToPng](#convertpdftopng) | Convert PDF pages to PNG images. |
@@ -191,9 +191,9 @@ PDFApp.setPDFBlob(blob).getMetadata()
 
 - This is from my post "[Management of PDF Metadata using Google Apps Script](https://medium.com/google-cloud/management-of-pdf-metadata-using-google-apps-script-60fd41f4fc16)".
 
-<a name="udpatemetadata"></a>
+<a name="updateMetadata"></a>
 
-## udpateMetadata
+## updateMetadata
 
 ![](images/fig3.png)
 
@@ -213,7 +213,7 @@ const object = {
   producer: "sample producer",
 };
 
-PDFApp.setPDFBlob(blob).udpateMetadata(object)
+PDFApp.setPDFBlob(blob).updateMetadata(object)
   .then(newBlob => DriveApp.createFile(newBlob))
   .catch(err => console.log(err));
 ```