diff --git a/requirements.txt b/requirements.txt
index 914910f..06764d8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ chardet==2.3.0
 click==6.7
 docx2txt==0.6
 EbookLib==0.15
-Flask==0.12.2
+Flask==1.0
 Flask-HTTPAuth==3.2.3
 Flask-RESTful==0.3.6
 itsdangerous==0.24