diff --git a/docs/pydoc_markdown_shtab.py b/docs/pydoc_markdown_shtab.py
index 2883f85..c0d3519 100644
--- a/docs/pydoc_markdown_shtab.py
+++ b/docs/pydoc_markdown_shtab.py
@@ -8,6 +8,10 @@ def _process(self, node):
         if not getattr(node, "docstring", None):
             return super()._process(node)
         # convert parameter lists to markdown list
-        node.docstring = re.sub(r"^(\w+)\s{2,}(:.*?)$", r"* __\1__*\2*  ", node.docstring,
-                                flags=re.M)
+        node.docstring.content = re.sub(
+            r"^(\w+)\s{2,}(:.*?)$",
+            r"* __\1__*\2*  ",
+            node.docstring.content,
+            flags=re.M,
+        )
         return super()._process(node)
diff --git a/docs/requirements.txt b/docs/requirements.txt
index f763c36..d18b194 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,5 +1,5 @@
 mkdocs-material
-git+git://github.com/iterative/jsmin@python3-only#egg=jsmin
+git+https://github.com/iterative/jsmin@python3-only#egg=jsmin
 mkdocs-minify-plugin
 pydoc-markdown>=4
 pygments