diff --git a/setup.py b/setup.py
index a2f0229be50..b30e69e6afb 100644
--- a/setup.py
+++ b/setup.py
@@ -124,7 +124,7 @@ def has_ext_modules(self):
         packages=find_packages(),
         include_package_data=True,
         install_requires=[
-            "matplotlib>=2.0.2",
+            "matplotlib>=2.0.2,<3.4",
             "setuptools>=19.6",
             "sympy>=1.2",
             "numpy>=1.10.4",
diff --git a/tests/test_requirements.txt b/tests/test_requirements.txt
index 2fbd77c496f..e6c95c0fde6 100644
--- a/tests/test_requirements.txt
+++ b/tests/test_requirements.txt
@@ -5,7 +5,7 @@ fastcache~=1.0.2
 glueviz~=0.13.3
 h5py~=3.1.0
 ipython~=7.6.1
-matplotlib~=3.3
+matplotlib<3.4
 nose-timer~=1.0.0
 nose~=1.3.7
 pandas~=1.1.2