diff --git a/.github/workflows/collab.yml b/.github/workflows/collab.yml
index de57edec9..16764c7ec 100644
--- a/.github/workflows/collab.yml
+++ b/.github/workflows/collab.yml
@@ -18,7 +18,17 @@ jobs:
       - name: Install Build Software & LaTeX
         shell: bash -l {0}
         run: |
-          pip install jupyter-book==1.0.3 quantecon-book-theme==0.8.2 sphinx-tojupyter==0.3.0 sphinxext-rediraffe==0.2.7 sphinxcontrib-youtube==1.3.0 sphinx-togglebutton==0.3.2 arviz sphinx-proof sphinx-exercise sphinx-reredirects
+          pip install \
+            "jupyter-book>=1.0.4post1,<2.0" \
+            quantecon-book-theme==0.21.0 \
+            sphinx-tojupyter==0.6.0 \
+            sphinxext-rediraffe==0.3.0 \
+            sphinxcontrib-youtube==1.5.0 \
+            sphinx-togglebutton==0.4.5 \
+            arviz \
+            sphinx-proof==0.4.0 \
+            sphinx-exercise==1.2.1 \
+            sphinx-reredirects==1.1.0
           apt-get update
           apt-get install dvipng texlive texlive-latex-extra texlive-fonts-recommended cm-super    
       - name: Check nvidia drivers