diff --git a/categories-and-types/README.md b/categories-and-types/README.md
index 159b940..5cca646 100644
--- a/categories-and-types/README.md
+++ b/categories-and-types/README.md
@@ -19,6 +19,7 @@
 |campaign-name| | | X | | | |
 |cc-number| | | | | X | |
 |cdhash| | X | | | | |
+|chrome-extension-id| | | | | | |
 |comment| X | X | X | X | X | X |
 |community-id| | | | X | | |
 |cookie| | X | | | | |
@@ -185,6 +186,7 @@
 |campaign-name| | | | | | |
 |cc-number| | | | | | |
 |cdhash| | | X | X | | |
+|chrome-extension-id| | | X | X | | |
 |comment| X | X | X | X | X | X |
 |community-id| X | | | | | |
 |cookie| X | | | | | |
@@ -351,6 +353,7 @@
 |campaign-name| | | | |
 |cc-number| | | | |
 |cdhash| | | | |
+|chrome-extension-id| | | | |
 |comment| X | X | X | X |
 |community-id| | | | |
 |cookie| | | | |
@@ -537,6 +540,7 @@
 *   **campaign-name**: Associated campaign name
 *   **cc-number**: Credit-Card Number
 *   **cdhash**: An Apple Code Directory Hash, identifying a code-signed Mach-O executable file
+*   **chrome-extension-id**: Chrome extension id
 *   **comment**: Comment or description in a human language
 *   **community-id**: a community ID flow hashing algorithm to map multiple traffic monitors into common flow id
 *   **cookie**: HTTP cookie as often stored on the user web client. This can include authentication cookie or session cookie.