diff --git a/Inline-script-tag-filtering.md b/Inline-script-tag-filtering.md
index 413e4b0..afb4dca 100644
--- a/Inline-script-tag-filtering.md
+++ b/Inline-script-tag-filtering.md
@@ -18,6 +18,7 @@ Script tag filters do not work in all browsers, due to browser API limitations:
 - Not supported in Chromium-based browser.
     - Starring the [related Chromium issue](https://code.google.com/p/chromium/issues/detail?id=168175) may help motivate Chromium devs to implement support.
     - Falling back on wholesale blocking of all inline script tags may work.<sup>[1]</sup>
+- Not supported Firefox WebExtensions version of uBO.
 
 <sub>[1] Through the use of the `inline-script` static filter option (`||example.com^$inline-script`), or through the use of a dynamic filtering block rule for _inline scripts_.</sub>