diff --git a/requirements.txt b/requirements.txt
index defe4ab4..9c8f53f1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-flask
+flask==2.2.5
 flask-session==0.3.2
 flask-oauthlib==0.9.6
 xero-python==1.5.3
\ No newline at end of file