diff --git a/test-requirements.txt b/test-requirements.txt
index 379004b05..76bf1e6be 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,6 +1,6 @@
 zope.testbrowser==4.0.2
 lxml>=3.1beta1
-flask==0.7.2
+flask==2.3.2
 selenium==2.32.0
 coverage==3.5.1
 cssselect>=0.7.1