diff --git a/setup.py b/setup.py
index 3ea5808..7bc9d95 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,9 @@
         'DOI': 'https://doi.org/10.5281/zenodo.5576490',
     },
     packages=setuptools.find_packages(exclude=('tests', 'examples', 'doc')),
-    python_requires='>=3.8',
+    # Officially, Python 3.8 is the lowest supported version, but almost
+    # everything works on Python 3.7.
+    python_requires='>=3.7',
     install_requires=[
         'numpy>=1.21.0',
         'scipy>=1.7.0',