Try pinning up newer sphinx now that pyzmq is patched.

dihm · dihm · commit 6cb61041e81d · 2022-06-02T09:51:13.000-04:00
diff --git a/setup.cfg b/setup.cfg
@@ -45,9 +45,8 @@ install_requires =
 [options.extras_require]
 docs = 
   PyQt5
-  Sphinx==3.5.4
+  Sphinx==4.4.0
   sphinx-rtd-theme==0.5.2
   recommonmark==0.6.0
   m2r==0.2.1
   mistune<2.0.0
-  jinja2<3.1
