diff --git a/requirements.txt b/requirements.txt
index 95ba0ef..b0dfd15 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 cawdrey>=0.3.0
 domdf-python-tools>=1.7.0
 matplotlib==3.2.2; platform_machine == "aarch64" and python_version == "3.6"
-matplotlib<3.4.0,>=3.2.2; platform_machine != "aarch64" or python_version > "3.6"
+matplotlib>=3.2.2,<3.5.0; platform_machine != "aarch64" or python_version > "3.6"
 typing-extensions>=3.7.4.3
diff --git a/tests/requirements.txt b/tests/requirements.txt
index 2f3785e..888ffec 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -3,7 +3,7 @@ coverage>=5.1
 coverage-pyver-pragma>=0.2.1
 domdf-python-tools[testing]>=2.0.1
 iniconfig!=1.1.0,>=1.0.1
-matplotlib==3.2.2; platform_machine == "aarch64" and python_version == "3.6"
+matplotlib==3.4.0; platform_machine == "aarch64" and python_version == "3.6"
 pytest>=6.0.0
 pytest-cov>=2.8.1
 pytest-mpl>=0.11