diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 7809c2a9..04804108 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -11,3 +11,16 @@ updates:
       prefix: ⬆️
     schedule:
       interval: weekly
+
+  - package-ecosystem: "conda"
+    directory: "/"
+    commit-message:
+      prefix: ⬆️
+    schedule:
+      interval: weekly
+    ignore:
+      - dependency-name: "jupyter-book"
+        versions: [">=2.0"]
+      - dependency-name: "python"
+        # Python version should be constrained by the anaconda distribution version
+        versions: [">0"]
diff --git a/.github/workflows/collab.yml b/.github/workflows/collab.yml
index ed4323fe..8fff8c88 100644
--- a/.github/workflows/collab.yml
+++ b/.github/workflows/collab.yml
@@ -32,7 +32,7 @@ jobs:
       - name: Install Build Software
         shell: bash -l {0}
         run: |
-          pip install jupyter-book==0.15.1 docutils==0.17.1 quantecon-book-theme==0.7.1 sphinx-tojupyter==0.3.0 sphinxext-rediraffe==0.2.7 sphinx-exercise==0.4.1 sphinxcontrib-youtube==1.1.0 sphinx-togglebutton==0.3.1 arviz==0.13.0
+          pip install "jupyter-book>=1.0.4post1,<2.0" quantecon-book-theme==0.15.1 sphinx-tojupyter==0.6.0 sphinxext-rediraffe==0.3.0 sphinx-exercise==1.2.1 sphinx-proof==0.3.0 sphinxcontrib-youtube==1.4.1 sphinx-togglebutton==0.3.2 sphinx-reredirects==1.0.0
       # Build of HTML (Execution Testing)
       - name: Build HTML
         shell: bash -l {0}
diff --git a/environment.yml b/environment.yml
index e16b7c69..46e0ba54 100644
--- a/environment.yml
+++ b/environment.yml
@@ -3,11 +3,11 @@ channels:
   - default
 dependencies:
   - python=3.13
-  - anaconda=2025.06
+  - anaconda=2025.12
   - pip
   - pip:
-    - jupyter-book==1.0.4post1
-    - quantecon-book-theme==0.15.0
+    - jupyter-book>=1.0.4post1,<2.0
+    - quantecon-book-theme==0.15.1
     - sphinx-tojupyter==0.6.0
     - sphinxext-rediraffe==0.3.0
     - sphinx-exercise==1.2.1