diff --git a/requirements.txt b/requirements.txt
index f0d02d4..08a6e8f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
 numpy>=1.20.0
-matplotlib>=3.1.1 !=3.3.0rc1
+matplotlib>=3.1.1!=3.3.0rc1