diff --git a/core-spec/spec.md b/core-spec/spec.md
index 86bbc636..019a87cf 100644
--- a/core-spec/spec.md
+++ b/core-spec/spec.md
@@ -487,6 +487,7 @@ The following are well-known examples:
 | `GOODDATA` | GoodData-specific attributes |
 | `HONEYDEW` | Honeydew-specific attributes |
 | `WISDOM` | WisdomAI-specific attributes |
+| `POWER_BI` | Microsoft Power BI-specific attributes |
 | `SIGMA` | Sigma Computing-specific attributes |
 
 ### Examples