diff --git a/README.md b/README.md
index eead6a86..46c2bf92 100644
--- a/README.md
+++ b/README.md
@@ -160,6 +160,7 @@ Please take a quick gander at the [contribution guidelines](https://github.com/a
 * [loginsrv](https://github.com/tarent/loginsrv) - JWT login microservice with plugable backends such as OAuth2 (Github), htpasswd, osiam.
 * [oauth2](https://github.com/golang/oauth2) - Successor of goauth2. Generic OAuth 2.0 package that comes with JWT, Google APIs, Compute Engine and App Engine support.
 * [osin](https://github.com/openshift/osin) - Golang OAuth2 server library.
+* [otpgen](https://github.com/grijul/otpgen) - Library to generate TOTP/HOTP codes
 * [otpgo](https://github.com/jltorresm/otpgo) - Time-Based One-Time Password (TOTP) and HMAC-Based One-Time Password (HOTP) library for Go.
 * [paseto](https://github.com/o1egl/paseto) - Golang implementation of Platform-Agnostic Security Tokens (PASETO).
 * [permissions2](https://github.com/xyproto/permissions2) - Library for keeping track of users, login states and permissions. Uses secure cookies and bcrypt.