diff --git a/doc/contributing/diagnostic-tooling-support-tiers.md b/doc/contributing/diagnostic-tooling-support-tiers.md
index 6560f9565380b4..af6eee3b77e0ff 100644
--- a/doc/contributing/diagnostic-tooling-support-tiers.md
+++ b/doc/contributing/diagnostic-tooling-support-tiers.md
@@ -125,7 +125,6 @@ The tools are currently assigned to Tiers as follows:
 | Tool Type | Tool/API Name             | Regular Testing in Node.js CI | Integrated with Node.js | Target Tier |
 | --------- | ------------------------- | ----------------------------- | ----------------------- | ----------- |
 | FFDC      | node-report               | No                            | No                      | 1           |
-| Memory    | mdb\_V8                   | No                            | No                      | 4           |
 | Memory    | node-heapdump             | No                            | No                      | 2           |
 | Memory    | V8 heap profiler          | No                            | Yes                     | 1           |
 | Memory    | V8 sampling heap profiler | No                            | Yes                     | 1           |