diff --git a/pweave/formatters/markdownmath.py b/pweave/formatters/markdownmath.py
index 5a9c629..f665160 100644
--- a/pweave/formatters/markdownmath.py
+++ b/pweave/formatters/markdownmath.py
@@ -1,3 +1,4 @@
+from xml.etree.ElementTree import Element
 import markdown
 
 
@@ -6,7 +7,7 @@ def __init__(self):
         markdown.inlinepatterns.Pattern.__init__(self, r'(?<!\\)(\$\$?)(.+?)\2')
 
     def handleMatch(self, m):
-        node = markdown.util.etree.Element('span class="math"')
+        node = Element('span class="math"')
         # node.text = markdown.util.AtomicString(m.group(2) + m.group(3) + m.group(2))
         if m.group(2) == "$$":
             node.text = markdown.util.AtomicString("\[" + m.group(3) + "\]")
@@ -17,5 +18,5 @@ def handleMatch(self, m):
 
 class MathExtension(markdown.Extension):
 
-    def extendMarkdown(self, md, md_globals):
-        md.inlinePatterns.add('math', MathPattern(), '<escape')
\ No newline at end of file
+    def extendMarkdown(self, md):
+        md.inlinePatterns.register(MathPattern(), 'math', 185)
diff --git a/requirements.txt b/requirements.txt
index 4bd07e0..ab5b4a1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-markdown
+markdown >= 3.0
 pygments
 ipython
 nbformat
diff --git a/setup.py b/setup.py
index 3ca46de..f04c697 100644
--- a/setup.py
+++ b/setup.py
@@ -35,7 +35,7 @@ def read(fname):
       author_email='matti.pastell@helsinki.fi',
       url='http://mpastell.com/pweave',
       packages=['pweave', 'pweave.themes', 'pweave.formatters', 'pweave.processors', 'pweave.bokeh'],
-      install_requires = ['markdown',
+      install_requires = ['markdown >= 3.0',
                             'pygments',
                             'ipython >= 6.0',
                             'nbformat',