diff --git a/files/en-us/mozilla/add-ons/webextensions/api/declarativenetrequest/resourcetype/index.md b/files/en-us/mozilla/add-ons/webextensions/api/declarativenetrequest/resourcetype/index.md
index a69309cffa531b1..aa961bcae95fef5 100644
--- a/files/en-us/mozilla/add-ons/webextensions/api/declarativenetrequest/resourcetype/index.md
+++ b/files/en-us/mozilla/add-ons/webextensions/api/declarativenetrequest/resourcetype/index.md
@@ -23,6 +23,8 @@ Values of this type are strings. Possible values are:
   - : Resources loaded to be rendered as image, except for `imageset` on browsers that support that type (see browser compatibility below).
 - `imageset`
   - : Images loaded by a {{HTMLElement("picture")}} element or given in an `<img>` element's [`srcset`](/en-US/docs/Web/HTML/Reference/Elements/img#srcset) attribute.
+- `json`
+  - : JSON modules loaded through an [import statement](/en-US/docs/Web/JavaScript/Reference/Statements/import).
 - `main_frame`
   - : Top-level documents loaded into a tab.
 - `media`
diff --git a/files/en-us/mozilla/add-ons/webextensions/api/webrequest/resourcetype/index.md b/files/en-us/mozilla/add-ons/webextensions/api/webrequest/resourcetype/index.md
index 1208c6ae70293c2..8dac4455619539d 100644
--- a/files/en-us/mozilla/add-ons/webextensions/api/webrequest/resourcetype/index.md
+++ b/files/en-us/mozilla/add-ons/webextensions/api/webrequest/resourcetype/index.md
@@ -25,6 +25,8 @@ Values of this type are strings. Possible values are:
   - : Resources loaded to be rendered as image, except for `imageset` on browsers that support that type (see browser compatibility below).
 - `imageset`
   - : Images loaded by a {{HTMLElement("picture")}} element or given in an `<img>` element's [`srcset`](/en-US/docs/Web/HTML/Reference/Elements/img#srcset) attribute.
+- `json`
+  - : JSON modules loaded through an [import statement](/en-US/docs/Web/JavaScript/Reference/Statements/import).
 - `main_frame`
   - : Top-level documents loaded into a tab.
 - `media`
diff --git a/files/en-us/mozilla/firefox/releases/138/index.md b/files/en-us/mozilla/firefox/releases/138/index.md
index dc4da40c6255c95..feb58d9e6644925 100644
--- a/files/en-us/mozilla/firefox/releases/138/index.md
+++ b/files/en-us/mozilla/firefox/releases/138/index.md
@@ -83,6 +83,7 @@ No notable changes
   - `groupId` to {{WebExtAPIRef("tabs.Tab")}}. ([Firefox bug 1959713](https://bugzil.la/1959713))
   - `groupId` to {{WebExtAPIRef("tabs.query")}}. ([Firefox bug 1959715](https://bugzil.la/1959715))
   - `groupId` to {{WebExtAPIRef("tabs.onUpdated")}}. ([Firefox bug 1959716](https://bugzil.la/1959716)
+- The `json` resource type is now supported in both {{WebExtAPIRef("webRequest.ResourceType")}} and {{WebExtAPIRef("declarativeNetRequest.ResourceType")}} in Firefox, with import attributes enabled by default. Previously, it was reported as `script`. ([Firefox bug 1858078](https://bugzil.la/1858078) and [Firefox bug 1950836](https://bugzil.la/1950836))
 
 ## Experimental web features