diff --git a/.github/workflows/cache.yml b/.github/workflows/cache.yml
index 068f201..034f9a9 100644
--- a/.github/workflows/cache.yml
+++ b/.github/workflows/cache.yml
@@ -62,7 +62,7 @@ jobs:
           miniconda-version: 'latest'
           python-version: 3.8
           environment-file: environment.yml
-          activate-environment: qe-lectures
+          activate-environment: lecture-python
       - name: Checkout QuantEcon theme
         uses: actions/checkout@v2
         with:
@@ -78,5 +78,6 @@ jobs:
       - name: Build Website files
         shell: bash -l {0}
         run: |
+          ls theme/lecture-python.theme
           make website THEMEPATH=theme/lecture-python.theme
           ls _build/website/jupyter_html/*
\ No newline at end of file
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 71f3a46..dc98584 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
           miniconda-version: 'latest'
           python-version: 3.8
           environment-file: environment.yml
-          activate-environment: qe-lectures
+          activate-environment: lecture-python
       - name: Display Conda Environment Versions
         shell: bash -l {0}
         run: conda list
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 13c6a6c..1cd5ca5 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -17,7 +17,7 @@ jobs:
           miniconda-version: 'latest'
           python-version: 3.8
           environment-file: environment.yml
-          activate-environment: qe-lectures
+          activate-environment: lecture-python
       - name: Run Execution Tests
         shell: bash -l {0}
         run: make coverage
diff --git a/.github/workflows/pdf.yml b/.github/workflows/pdf.yml
index 169cf51..30d4437 100644
--- a/.github/workflows/pdf.yml
+++ b/.github/workflows/pdf.yml
@@ -35,7 +35,13 @@ jobs:
           miniconda-version: 'latest'
           python-version: 3.8
           environment-file: environment.yml
-          activate-environment: qe-lectures
+          activate-environment: lecture-python
+      - name: Checkout QuantEcon theme
+        uses: actions/checkout@v2
+        with:
+          repository: QuantEcon/lecture-python.theme
+          token: ${{ secrets.ACTIONS_PAT }}
+          path: theme/lecture-python.theme
       - name: Build PDF
         shell: bash -l {0}
         run: |
@@ -43,6 +49,7 @@ jobs:
           echo 'export PATH=/tmp/texlive/bin/x86_64-linux:$PATH' >> ~/.bash_profile
           source ~/.bash_profile
           more ~/.bash_profile
+          ls theme/lecture-python.theme
           make pdf
       - uses: actions/upload-artifact@v2
         with:
diff --git a/.github/workflows/preview.yml b/.github/workflows/preview.yml
index 077100a..a57f9f4 100644
--- a/.github/workflows/preview.yml
+++ b/.github/workflows/preview.yml
@@ -17,7 +17,7 @@ jobs:
           miniconda-version: 'latest'
           python-version: 3.8
           environment-file: environment.yml
-          activate-environment: qe-lectures
+          activate-environment: lecture-python
       - name: Get Changed Files
         id: files
         uses: jitterbit/get-changed-files@v1
diff --git a/environment.yml b/environment.yml
index 0e4ed13..4957b11 100644
--- a/environment.yml
+++ b/environment.yml
@@ -1,10 +1,10 @@
 
-name: qe-lectures
+name: lecture-python
 channels:
   - default
 dependencies:
   - python=3.8
-  - anaconda=2020.11
+  - anaconda=2020.07
   - pip
   - pip:
     - quantecon