diff --git a/countland-py/setup.cfg b/countland-py/setup.cfg
index ddf9f59..d1ae048 100644
--- a/countland-py/setup.cfg
+++ b/countland-py/setup.cfg
@@ -25,7 +25,7 @@ setup_requires =
 install_requires =
     glmpca
     imgaug <0.2.7, >=0.2.5  #  Version specification for dependencies
-    matplotlib
+    matplotlib >=3.0.0
     numpy <1.22, >=1.18   # Version specification for numba
     pandas
     scanpy