diff --git a/src/doc/rustc-dev-guide/ci/install.sh b/src/doc/rustc-dev-guide/ci/install.sh
index be64d1ee831f..48df957f9755 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 0.3.0
+cargo_install mdbook 0.3.1
 cargo_install mdbook-linkcheck 0.3.1