diff --git a/docs/sphinx/depfile.py b/docs/sphinx/depfile.py
index b6fb926..99539ad 100644
--- a/docs/sphinx/depfile.py
+++ b/docs/sphinx/depfile.py
@@ -13,6 +13,7 @@
 import os
 import sphinx
 import sys
+from pathlib import Path
 
 __version__ = '1.0'
 
@@ -25,6 +26,10 @@ def get_infiles(env):
         if hasattr(mod, '__file__'):
             if mod.__file__:
                 yield mod.__file__
+    # this is perhaps going to include unused files:
+    for static_path in env.config.html_static_path:
+        for path in Path(static_path).rglob('*'):
+            yield str(path)
 
 
 def write_depfile(app, exception):