diff --git a/setup.cfg b/setup.cfg
index e92b60b..926d75f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -50,7 +50,7 @@ install_requires =
 	fs ~=2.4
 	pronto ~=0.12
 	six ~=1.11
-	openpyxl ~=2.5
+	openpyxl >=2.5
 	lxml ~=4.2              ; python_version < '3'
 
 [options.entry_points]