diff --git a/cornflow-dags/requirements.txt b/cornflow-dags/requirements.txt
index 9ccfd667..f06c51bf 100644
--- a/cornflow-dags/requirements.txt
+++ b/cornflow-dags/requirements.txt
@@ -1,6 +1,6 @@
 cornflow-client>=1.1.0
 orloge<=0.17.2
-PuLP<=2.7
+PuLP<=2.9.0
 pandas<=2.1.1
 hackathonbaobab2020[solvers]
 pytups<=0.86.2
diff --git a/cornflow-server/requirements.txt b/cornflow-server/requirements.txt
index 065eba48..90a34313 100644
--- a/cornflow-server/requirements.txt
+++ b/cornflow-server/requirements.txt
@@ -20,7 +20,7 @@ gunicorn<=22.0.0
 jsonpatch<=1.32
 ldap3<=2.9.1
 marshmallow<=3.19.0
-PuLP<=2.7.0
+PuLP<=2.9.0
 psycopg2<=2.95
 PyJWT<=2.6.0
 pytups>=0.86.2
diff --git a/libs/client/requirements.txt b/libs/client/requirements.txt
index cd15bac1..27c7dd93 100644
--- a/libs/client/requirements.txt
+++ b/libs/client/requirements.txt
@@ -4,4 +4,4 @@ jsonschema<=4.19.1
 marshmallow<=3.19.0
 pytups<=0.86.2
 ortools<=9.8.3296
-PuLP<=2.7.0
\ No newline at end of file
+PuLP<=2.9.0