diff --git a/README.md b/README.md
index c3788a7..1a5accf 100644
--- a/README.md
+++ b/README.md
@@ -259,6 +259,7 @@ A curated list of cryptography resources and links.
 - [keywhiz](https://github.com/square/keywhiz) - A system for distributing and managing secrets.
 - [pac4j](https://github.com/pac4j/pac4j) - Security engine.
 - [scrypt](https://github.com/wg/scrypt) - Pure Java implementation of the scrypt key derivation function and a JNI interface to the C implementations, including the SSE2 optimized version.
+- [proteus.js](http://example.com/) - A short description ends with a period.
 
 ### Julia
 
@@ -316,6 +317,7 @@ encryption library providing MD5, SHA1, SHA2 hashing and HMAC functionality, as
 ### Rust
 
 - [octavo](https://github.com/libOctavo/octavo) - Highly modular & configurable hash & crypto library.
+- [proteus](https://github.com/wireapp/proteus) - Axolotl protocol implementation, without header keys, in Rust.
 - [ring](https://github.com/briansmith/ring) - Safe, fast, small crypto using Rust & BoringSSL's cryptography primitives.
 - [rust-crypto](https://github.com/DaGenix/rust-crypto) - Mostly pure-Rust implementation of various cryptographic algorithms.
 - [rust-openssl](https://github.com/sfackler/rust-openssl) - OpenSSL bindings for Rust.