diff --git a/README.md b/README.md
index b90e168..aeac808 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,8 @@ A curated list of awesome malware analysis tools and resources. Inspired by
   edit file metadata.
 * [hashdeep](https://github.com/jessek/hashdeep) - Compute digest hashes with
   a variety of algorithms.
+* [nsrllookup](https://github.com/rjhansen/nsrllookup) - A tool for looking
+  up hashes in NIST's National Software Reference Library database.
 * [packerid](http://handlers.sans.org/jclausing/packerid.py) - A cross-platform
   Python alternative to PEiD.
 * [ssdeep](http://ssdeep.sourceforge.net/) - Compute fuzzy hashes.