diff --git a/src/doc/rustc-dev-guide/ci/install.sh b/src/doc/rustc-dev-guide/ci/install.sh
index 947d751b488e..835f23192515 100755
--- a/src/doc/rustc-dev-guide/ci/install.sh
+++ b/src/doc/rustc-dev-guide/ci/install.sh
@@ -20,5 +20,5 @@ function cargo_install() {
   fi
 }
 
-cargo_install mdbook 0.2.2
+cargo_install mdbook 0.2.3
 cargo_install mdbook-linkcheck 0.2.3