diff --git a/requirements.txt b/requirements.txt
index 01bd522..0596686 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,2 @@
 dwave-ocean-sdk>=3.3.0
-
-matplotlib==3.3.4; python_version>'3.5'
-matplotlib==3.0.3; python_version=='3.5'
+matplotlib>=3.3.4