diff --git a/requirements.txt b/requirements.txt
index b1f405e9..1f927b87 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 numpy==1.26.4
-ortools==9.7.2996
+ortools==9.10.4067
 pandas==2.1.1
 sympy==1.12
diff --git a/slothy/core/core.py b/slothy/core/core.py
index cddf4fdd..acc31fc0 100644
--- a/slothy/core/core.py
+++ b/slothy/core/core.py
@@ -3135,6 +3135,9 @@ def _init_external_model_and_solver(self):
         self._model.cp_model  = cp_model.CpModel()
         self._model.cp_solver = cp_model.CpSolver()
         self._model.cp_solver.random_seed = self.config.solver_random_seed
+        self._model.cp_solver.parameters.num_workers = 16
+        self._model.cp_solver.parameters.cp_model_probing_level=0
+        self._model.cp_solver.parameters.linearization_level=0
 
     def _NewIntVar(self, minval, maxval, name=""): # pylint:disable=invalid-name
         r = self._model.cp_model.NewIntVar(minval,maxval, name)