diff --git a/scripts/upgrade b/scripts/upgrade
index ec2c04f..cf4ba14 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -161,18 +161,9 @@ then
 
 		# We set all necessary environement variable to create a python virtualenvironnement.
 		source $final_path/bin/activate
-		pip3 install --upgrade setuptools wheel pipupgrade
+		pip3 install --upgrade setuptools wheel
 		pip3 install --upgrade cffi ndg-httpsclient psycopg2 lxml jinja2
-
-		# Some pip package could be outdated and pip wont upgrade it automatically.
-		# This could be a security issue when some package have a vulnerability.
-		# It was by example the case with Twisted.
-		# Actually there are no official way to upgrade all package
-		# This problem is documented here : https://github.com/pypa/pip/issues/4551
-		# One best way is actually to use pipupgrade
-		pipupgrade --yes --pip-path $final_path/bin/pip
-
-		pip3 install --upgrade matrix-synapse==$upstream_version matrix-synapse-ldap3
+		pip3 install --upgrade 'Twisted>=20.3.0' matrix-synapse==$upstream_version matrix-synapse-ldap3
 
 		# This function was defined when we called "source $final_path/bin/activate". With this function we undo what "$final_path/bin/activate" does
 		deactivate