diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index e2ee67a7..934d5b66 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -33,7 +33,7 @@ jobs:
     - name: Install dependencies
       run: |
         pip install -r requirements.txt
-        pip install jupyter-book==1.0.1
+        pip install jupyter-book==1.0.0
         
     - name: execute scripts
       run: |