diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5b8ad7af..77e156f7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,7 +37,7 @@ jobs:
         environment-file: environment.yml
         python-version: "3.12"
         auto-activate-base: true
-        activate-environment: ""
+        activate-environment: true
     - name: "Build HTML docs"
       run: |
         make -C docs html linkcheck
diff --git a/docs/conf.py b/docs/conf.py
index 238dadca..68572168 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -489,3 +489,6 @@ def copy_html_files(app, exception):
             print(f"Copy {html_file} to {destination_file}")
     except Exception as e:
         print(f"Failed to copy HTML files: {e}")
+
+def setup(app):
+    app.connect("build-finished", copy_html_files)