1 files changed, 1 insertions, 0 deletions
diff --git a/setup.py b/setup.py
index 017b66619..4bcdf78c3 100644
--- a/setup.py
+++ b/setup.py
@@ -41,6 +41,7 @@ install_requires = [
     'ConfigArgParse>=0.9.3',
     'configobj',
     'cryptography>=1.2.3',  # load_pem_x509_certificate
+    'distro>=1.0.1',
     # 1.1.0+ is required to avoid the warnings described at
     # https://github.com/certbot/josepy/issues/13.
     'josepy>=1.1.0',