diff --git a/requirements-app.txt b/requirements-app.txt
index 6853b9177..4d50f6b32 100644
--- a/requirements-app.txt
+++ b/requirements-app.txt
@@ -11,7 +11,7 @@ git+https://github.com/mitsuhiko/flask-sqlalchemy.git@500e732dd1b975a56ab06a46bd
 Flask==1.0.2
 click-datetime==0.2
 eventlet==0.23.0
-gunicorn==19.7.1
+gunicorn==19.7.1  # pyup: ignore, >19.8 breaks eventlet patching
 iso8601==0.1.12
 jsonschema==3.0.1
 marshmallow-sqlalchemy==0.16.1
diff --git a/requirements.txt b/requirements.txt
index 0d1dd3003..57d2d04f9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ git+https://github.com/mitsuhiko/flask-sqlalchemy.git@500e732dd1b975a56ab06a46bd
 Flask==1.0.2
 click-datetime==0.2
 eventlet==0.23.0
-gunicorn==19.7.1
+gunicorn==19.7.1  # pyup: ignore, >19.8 breaks eventlet patching
 iso8601==0.1.12
 jsonschema==3.0.1
 marshmallow-sqlalchemy==0.16.1