diff --git a/requirements.txt b/requirements.txt
index 6b3ba24..9ea2b3a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ dash-renderer==0.11.1
 decorator==4.1.2
 descartes==1.1.0
 Fiona==1.7.11
-Flask==0.12.2
+Flask==1.0
 Flask-Compress==1.4.0
 geopandas==0.3.0
 gunicorn==19.7.1