diff --git a/README.md b/README.md
index 058fe4bb2..6f54968cd 100644
--- a/README.md
+++ b/README.md
@@ -1444,7 +1444,7 @@ TSLint is an extensible static analysis tool that checks TypeScript code for rea
 
 - [parasoft](https://www.parasoft.com/) :copyright: — Automated Software Testing Solutions for unit-, API-, and web UI testing. Complies with MISRA, OWASP, and others.
 
-- [pfff](https://github.com/facebookarchive/pfff/wiki/Main) — Facebook's tools for code analysis, visualizations, or style-preserving source transformation for many languages.
+- [pfff](https://github.com/facebookarchive/pfff/wiki/Main) :warning: — Facebook's tools for code analysis, visualizations, or style-preserving source transformation for many languages.
 
 - [PMD](https://pmd.github.io) — A source code analyzer for Java, Salesforce Apex, Javascript, PLSQL, XML, XSL and others.
 
diff --git a/data/api/tools.json b/data/api/tools.json
index 988eee93c..983ea0a39 100644
--- a/data/api/tools.json
+++ b/data/api/tools.json
@@ -12395,7 +12395,7 @@
     "plans": null,
     "description": "Facebook's tools for code analysis, visualizations, or style-preserving source transformation for many languages.",
     "discussion": null,
-    "deprecated": null,
+    "deprecated": true,
     "resources": null,
     "reviews": null,
     "demos": null,