diff --git a/setup.py b/setup.py
index 5d0c425741a26f54a38b74a515c0ecf71c168eb1..2eb80c5325772482ba8a582a8055e8d48aa7c358 100755
--- a/setup.py
+++ b/setup.py
@@ -13,8 +13,14 @@ setup(
     install_requires=[
         'beancount>=2.2',
     ],
-    setup_requires=['pytest-runner'],
-    tests_require=['pytest'],
+    setup_requires=[
+        'pytest-mypy',
+        'pytest-runner',
+    ],
+    tests_require=[
+        'mypy>=0.770',
+        'pytest',
+    ],
 
     packages=['conservancy_beancount'],
     entry_points={},