[requires.io] dependency update

requires · requires · commit cdfe3c853dc1 · 2021-01-04T17:27:35.000-08:00
diff --git a/tox.ini b/tox.ini
@@ -319,7 +319,7 @@ basepython = {[default]basepython}
 
 deps =
     Sphinx==3.4.2
-    sphinx-rtd-theme==0.5.0
+    sphinx-rtd-theme==0.5.1
 
 commands =
     sphinx-build                           \
