diff --git a/requirements.txt b/requirements.txt
index bf67156..844874e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,4 @@ Mastodon.py==1.4.6
 markovify==0.7.1
 beautifulsoup4==4.7.1
 requests==2.22.0
+Flask==1.1.1