diff --git a/nevergrad/benchmark/experiments.py b/nevergrad/benchmark/experiments.py
index 07da34114..24af2b523 100644
--- a/nevergrad/benchmark/experiments.py
+++ b/nevergrad/benchmark/experiments.py
@@ -1088,7 +1088,7 @@ def mixsimulator(seed: tp.Optional[int] = None) -> tp.Iterator[Experiment]:
     seedg = create_seed_generator(seed)
     optims: tp.List[str] = get_optimizers("basics", seed=next(seedg))  # type: ignore
 
-    seq = np.arange(0, 1601, 20)
+    seq = np.arange(0, 1601, 50)
     for budget in seq:
         for num_workers in [1, 30]:
             if num_workers < budget:
diff --git a/nevergrad/benchmark/test_experiments.py b/nevergrad/benchmark/test_experiments.py
index 0c28408ba..b14bf4c4b 100644
--- a/nevergrad/benchmark/test_experiments.py
+++ b/nevergrad/benchmark/test_experiments.py
@@ -32,6 +32,10 @@ def test_experiments_registry(name: str, maker: tp.Callable[[], tp.Iterator[expe
     if "_pgan" in name and os.environ.get("CIRCLECI", False):
         raise SkipTest("Too slow in CircleCI")
 
+    # mixsimulator is not accepted by circleci pytest.
+    if "mixsimulator" in name and os.environ.get("CIRCLECI", False):
+        raise SkipTest("Sigkill in CircleCI")
+
     # Our IQAs and our ScikitLearn are not well guaranteed on Windows.
     if all(x in name for x in ["image", "quality"]) and platform.system() == "Windows":
         raise SkipTest("Image quality not guaranteed on Windows.")
diff --git a/nevergrad/functions/mixsimulator/core.py b/nevergrad/functions/mixsimulator/core.py
index a3dc193d8..5192e7bb8 100644
--- a/nevergrad/functions/mixsimulator/core.py
+++ b/nevergrad/functions/mixsimulator/core.py
@@ -3,7 +3,7 @@
 # This source code is licensed under the MIT license found in the
 # LICENSE file in the root directory of this source tree.
 
-# Based on https://github.com/Foloso/MixSimulator/tree/nevergrad_experiment
+# Based on https://github.com/Foloso/MixSimulator
 
 from .. import base
 
@@ -24,12 +24,17 @@ class OptimizeMix(base.ExperimentFunction):
 
     """
 
-    def __init__(self, time: int = 168) -> None:
+    def __init__(self, time: int = 8760) -> None:
         try:
             from mixsimulator.MixSimulator import MixSimulator  # pylint: disable=import-outside-toplevel
+            from mixsimulator.Demand import Demand
 
             self._mix = MixSimulator()
             self._mix.set_data_to("Toamasina")
+            self._demand = Demand()
+            self._demand.set_data_to("Toamasina", delimiter=",")
+            self._mix.set_demand(self._demand)
+
         except (KeyError, AttributeError, ModuleNotFoundError) as e:
             # send a skip error so that this does not break the test suit
             raise base.UnsupportedExperiment("mixsimulator dependency issue") from e
diff --git a/requirements/bench.txt b/requirements/bench.txt
index 09164133b..fa547c6bf 100644
--- a/requirements/bench.txt
+++ b/requirements/bench.txt
@@ -15,7 +15,7 @@ Pillow
 tqdm
 torchvision
 pyomo>=5.7
-mixsimulator>=0.2.9.9
+mixsimulator>=0.3.3
 hyperopt>=0.2.5
 IOHexperimenter==0.2.8.7
 cdt>=0.5
@@ -24,3 +24,4 @@ tensorflow-estimator==2.3.0
 tensorflow>=2.3.1
 image-quality==1.2.6
 keras==2.2.4
+