diff --git a/setup.py b/setup.py
index 3b6b1a7..cf1ce1f 100644
--- a/setup.py
+++ b/setup.py
@@ -17,6 +17,7 @@
     packages=find_packages(),
     install_requires=[
         'django>2,<4.0',
+        'markdown>=3.2,<3.3',
     ],
     tests_require=[
         'tox',