diff --git a/requirements.txt b/requirements.txt
index baff761..95bec7d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,3 +6,4 @@ requests>=2.20.0
 gcamreader>=1.2.5
 xarray>=0.20.2
 netcdf4>=1.6.4
+matplotlib>=3.4.2
diff --git a/setup.py b/setup.py
index 69c335c..595dee0 100644
--- a/setup.py
+++ b/setup.py
@@ -19,13 +19,16 @@ def readme():
     description='A land use land cover change disaggregation model',
     long_description=readme(),
     long_description_content_type="text/markdown",
-    install_requires=['configobj>=5.0.6',
-                      'numpy>=1.20.3',
-                      'pandas>=1.2.4',
-                      'scipy>=1.6.3',
-                      'requests>=2.20.0',
-                      'gcamreader>=1.2.5',
-                      'xarray>= 0.20.2',
-                      'netcdf4>= 1.6.4'],
+    install_requires=[
+        'configobj>=5.0.6',
+        'numpy>=1.20.3',
+        'pandas>=1.2.4',
+        'scipy>=1.6.3',
+        'requests>=2.20.0',
+        'gcamreader>=1.2.5',
+        'xarray>= 0.20.2',
+        'netcdf4>= 1.6.4',
+        'matplotlib>=3.4.2',
+    ],
     include_package_data=True
 )