diff --git a/setup.py b/setup.py
index 41dd0bf..9b8e8e9 100644
--- a/setup.py
+++ b/setup.py
@@ -8,4 +8,7 @@ setup(
     zip_safe=False,
     url="https://github.com/matrix-org/synapse-s3-storage-provider",
     py_modules=['s3_storage_provider'],
+    install_requires=[
+        'boto3'
+    ],
 )