diff --git a/tools/ci-install.sh b/tools/ci-install.sh
index d150142..4677db6 100644
--- a/tools/ci-install.sh
+++ b/tools/ci-install.sh
@@ -6,6 +6,6 @@ if command -v mdbook >/dev/null 2>&1; then
     echo "mdbook already installed at $(command -v mdbook)"
 else
     echo "installing mdbook"
-    cargo install mdbook --vers "0.0.28"
+    cargo install mdbook --vers "0.1.2"
 fi