diff --git a/test/acceptance/lettuce/requirements.txt b/test/acceptance/lettuce/requirements.txt
index 1914ecede5..c3e89e91c3 100644
--- a/test/acceptance/lettuce/requirements.txt
+++ b/test/acceptance/lettuce/requirements.txt
@@ -1,6 +1,6 @@
 git+https://visitor:visitor@pdihub.hi.inet/fiware/fiware-iotqaUtils@v.3.1.2
 pymongo==4.6.3  # changed from 2.8 due to vulnerability check in github although we haven't checked if it works...
-flask==2.3.2   # changed from 0.12.3 to 2.3.2 due to vulnerability check in github although we haven't checked if it works...
+flask==3.1.3   # changed from 0.12.3 to 3.1.3 due to vulnerability check in github although we haven't checked if it works...
 lettuce==0.2.20
 requests==2.31.0  # changed from 2.20.0 (test/acceptance is no longer in use)
 psutil==5.6.6 # changed from 2.2.1 to 5.6.6 due to vulnerability check in github although we havent checked if it works...