diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 353f1bc3..42ee83e0 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -64,7 +64,7 @@ jobs:
 
     # Only upload to codecov on pull requests so that we don't trigger rate limit blocks
     - name: Upload to Codecov
-      if: matrix.os == 'ubuntu-latest' && matrix.python-version == 3.9 && github.repository == 'executablebooks/sphinx-book-theme' && github.event_name == 'pull_request'
+      if: matrix.os == 'ubuntu-latest' && matrix.python-version == 3.9 && matrix.sphinx == '~=7.0' && github.repository == 'executablebooks/sphinx-book-theme' && github.event_name == 'pull_request'
       uses: codecov/codecov-action@v3.1.4
       with:
         name: ebp-sbt-pytests-py3.7
diff --git a/src/sphinx_book_theme/__init__.py b/src/sphinx_book_theme/__init__.py
index 70070136..ceb29138 100644
--- a/src/sphinx_book_theme/__init__.py
+++ b/src/sphinx_book_theme/__init__.py
@@ -93,7 +93,6 @@ def hash_assets_for_files(assets: list, theme_static: Path, context, app):
         asset_type = "css_files" if asset_path.endswith(".css") else "script_files"
         if asset_type in context:
             # Define paths to the original asset file, and its linked file in Sphinx
-            asset_sphinx_link = f"_static/{asset_path}"
             asset_source_path = theme_static / asset_path
             if not asset_source_path.exists():
                 SPHINX_LOGGER.warning(
@@ -103,10 +102,7 @@ def hash_assets_for_files(assets: list, theme_static: Path, context, app):
             for ii, other_asset in enumerate(context[asset_type]):
                 # TODO: eventually the contents of context['css_files'] etc should probably
                 #       only be _CascadingStyleSheet etc. For now, assume mixed with strings.
-                if (
-                    getattr(other_asset, "filename", str(other_asset))
-                    != asset_sphinx_link
-                ):
+                if getattr(other_asset, "filename", str(other_asset)) != asset_path:
                     continue
                 # Take priority from existing asset or use default priority (500)
                 priority = getattr(other_asset, "priority", 500)
@@ -114,7 +110,7 @@ def hash_assets_for_files(assets: list, theme_static: Path, context, app):
                 del context[asset_type][ii]
                 # Add new asset
                 app.add_css_file(
-                    asset_sphinx_link,
+                    asset_path,
                     digest=_gen_hash(asset_source_path),
                     priority=priority,
                 )