# PDF.js Watermark Patch

**URL:** <https://pdfjs.community/t/pdf-js-watermark-patch/211>\
**Category:** Announcements\
**Created:** [August 19, 2020, 9:02pm UTC](https://pdfjs.community/t/pdf-js-watermark-patch/211 "2020-08-19T21:02:41Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Logan](https://yyz1.discourse-cdn.com/flex031/user_avatar/pdfjs.community/logan/32/13_2.png) [@Logan](https://pdfjs.community/u/Logan)\
**Post date:** [August 19, 2020, 9:02pm UTC](https://pdfjs.community/t/pdf-js-watermark-patch/211/1 "2020-08-19T21:02:41Z")

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Hi everyone,

There has been a few issues lately where watermarks are appearing even though a valid license key is provided. A lot of these issues are caused by a rarely occurring bug related to timezones and time sensitive keys.

We have released a patch (version 7.0.1) that addresses this issue. If you have already upgraded to 7.0, this should be a seamless upgrade.

If you are still using version 6.X, you can patch your application with the following instructions:

1. [Download the patched files here](https://pdfjs-express.s3-us-west-2.amazonaws.com/patches/patch_7.0.1.zip)

1. Extract the files and move them into `{pdfjs_path}/public/core/pdfjs`. This will overwrite two files, `pdfjsexpress.wasm` and `pdfjsexpress.asm.js`

Thats it! If you run into any issues, feel free to let me know.

Thank you,  
Logan