diff --git a/README.rst b/README.rst
index a05d4822..41eafb32 100644
--- a/README.rst
+++ b/README.rst
@@ -179,7 +179,7 @@ that need to generate TUF repository files, such as metadata,
 cryptographic keys, and signatures. Whereas the minimal install can only
 verify ed25519 signatures and is intended for sofware updater clients,
 ``tuf[tools]`` provides repository maintainers secure ed25519 key and
-signature generation with PyNaCl / libsodium.
+signature generation with PyNaCl / libNaCl.
 
 TUF tools also enable general-purpose cryptography with PyCrypto
 and/or PyCA's Cryptography.  Software updaters that want to support