diff --git a/requirements-dev.in b/requirements-dev.in
index 084b136..d3d281b 100644
--- a/requirements-dev.in
+++ b/requirements-dev.in
@@ -18,3 +18,6 @@ wheel
 # but it induces an install of cryptography
 # This is sucky for rpi systems.
 # twine
+
+# m2r is for converting .md files to .rst for the docs
+m2r