diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 7809c2a97..bb2ad36d2 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -11,3 +11,13 @@ updates:
       prefix: ⬆️
     schedule:
       interval: weekly
+
+  - package-ecosystem: "conda"
+    directory: "/"
+    commit-message:
+      prefix: ⬆️
+    schedule:
+      interval: weekly
+    ignore:
+      - dependency-name: "jupyter-book"
+        versions: [">=2.0"]
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f418e0b10..55cdc9124 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -43,13 +43,13 @@ jobs:
       - name: Display Pip Versions
         shell: bash -l {0}
         run: pip list
-      - name: Download "build" folder (cache)
-        uses: dawidd6/action-download-artifact@v11
-        with:
-          workflow: cache.yml
-          branch: main
-          name: build-cache
-          path: _build
+      # - name: Download "build" folder (cache)
+      #   uses: dawidd6/action-download-artifact@v11
+      #   with:
+      #     workflow: cache.yml
+      #     branch: main
+      #     name: build-cache
+      #     path: _build
       # Build Assets (Download Notebooks and PDF via LaTeX)
       - name: Build Download Notebooks (sphinx-tojupyter)
         shell: bash -l {0}
diff --git a/environment.yml b/environment.yml
index adb1b2856..58b7cc019 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==0.4.0
     - sphinxext-rediraffe==0.2.7
     - sphinx-exercise==1.2.0
diff --git a/lectures/newton_method.md b/lectures/newton_method.md
index 54194ca80..f39be1ac5 100644
--- a/lectures/newton_method.md
+++ b/lectures/newton_method.md
@@ -552,7 +552,6 @@ $$
 The function below calculates the excess demand for given parameters
 
 ```{code-cell} ipython3
-@jax.jit
 def e(p, A, b, c):
     return jnp.exp(-A @ p) + c - b * jnp.sqrt(p)
 ```