diff --git a/Dockerfile b/Dockerfile
index e6e43d5629a2c346192c15fc2141e06370bc73f2..3ffdf0f1ce2589ad753e796e7760d3eee30204f8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -35,8 +35,8 @@ RUN pip install plotly
 
 # Install for -> artifint
 RUN pip install python-constraint
-RUN pip install ortools
 RUN pip install protobuf==3.19
+RUN pip install ortools==9.1
 #RUN pip install tensorflow_decision_forests
 
 # Install for -> windkanl