diff --git a/requirements.txt b/requirements.txt
index de7f4aa0..a143389b 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,4 +35,4 @@ pyqt5
 lxml_html_clean
 ashlar>=1.19.0
 networkx
-py-lmd
+py-lmd>=1.3.0