diff --git a/request-invoice/requirements.txt b/request-invoice/requirements.txt
index 1b0b2ce..a0da9a2 100644
--- a/request-invoice/requirements.txt
+++ b/request-invoice/requirements.txt
@@ -1,5 +1,5 @@
 python-dotenv>=0.13.0
-flask==1.1.1
+flask==1.1.4
 flask-limiter
 tornado
 pyln-client