diff --git a/index.d.ts b/index.d.ts
index 06f8455..25636d6 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -465,7 +465,7 @@ interface PdfPackage {
             footerLine?: boolean // Display line above the footer
             footerRight?: string // Right aligned footer text
             footerSpacing?: number // Spacing between footer and content in mm (default 0)
-            footerHtml?: string // URL to footer html
+            footerHTML?: string // URL to footer html
             headerCenter?: string // Centered header text
             headerFontName?: string // Set header font name (default Arial)
             headerFontSize?: number // Set header font size (default 12)
@@ -473,7 +473,7 @@ interface PdfPackage {
             headerLine?: boolean // Display line below the header
             headerRight?: string // Right aligned header text
             headerSpacing?: number // Spacing between header and content in mm (default 0)
-            headerHtml?: string // URL to header html
+            headerHTML?: string // URL to header html
         }
     ): any
 
@@ -490,6 +490,9 @@ interface PdfPackage {
         command: "watermark",
         pdfData: any,
         options: {
+            description: {
+                [key: string]: number | string
+            }
             mode: "image"
             bytes: any // []byte of watermark image
         }