diff --git a/Cargo.toml b/Cargo.toml
index bff1144db0..a0b29ee906 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mdbook"
-version = "0.0.21-pre"
+version = "0.0.21"
 authors = ["Mathieu David <mathieudavid@mathieudavid.org>"]
 description = "create books from markdown files (like Gitbook)"
 documentation = "http://azerupi.github.io/mdBook/index.html"