diff --git a/Makefile b/Makefile
index cf441033fb..7ac1a8fad5 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ OPEN_PR="true"
 # If one wants to force the installation of a given rc version
 # /!\ WARNING /!\: This version should NEVER be a wildcard as it might create some
 # issues when trying to run it in the future.
-CP_VERSION_SPEC_FOR_RC="concrete-python==2.4.0"
+CP_VERSION_SPEC_FOR_RC="concrete-python==2.5.0rc1"
 
 # If one wants to use the last RC version
 # CP_VERSION_SPEC_FOR_RC="$$(poetry run python \
diff --git a/deps_licenses/licenses_linux_user.txt b/deps_licenses/licenses_linux_user.txt
index 94dddb0ce9..ae2ac541c5 100644
--- a/deps_licenses/licenses_linux_user.txt
+++ b/deps_licenses/licenses_linux_user.txt
@@ -9,7 +9,7 @@ certifi, 2023.7.22, Mozilla Public License 2.0 (MPL 2.0)
 charset-normalizer, 3.2.0, MIT License
 click, 8.1.7, BSD License
 coloredlogs, 15.0.1, MIT License
-concrete-python, 2.4.0, BSD-3-Clause
+concrete-python, 2.5.0rc1, BSD-3-Clause
 dependencies, 2.0.1, BSD License
 dill, 0.3.7, BSD License
 exceptiongroup, 1.1.3, MIT License
diff --git a/deps_licenses/licenses_linux_user.txt.md5 b/deps_licenses/licenses_linux_user.txt.md5
index f0ff1e35ea..98e17f95b3 100644
--- a/deps_licenses/licenses_linux_user.txt.md5
+++ b/deps_licenses/licenses_linux_user.txt.md5
@@ -1 +1 @@
-5ea389d8b97dc534603abf9b77ff8a40
+23c5d6fb1d7ce0d5200ecf9fb6d4aeb0
diff --git a/src/concrete/ml/common/utils.py b/src/concrete/ml/common/utils.py
index 77230f15df..47de281f98 100644
--- a/src/concrete/ml/common/utils.py
+++ b/src/concrete/ml/common/utils.py
@@ -37,7 +37,7 @@
 # Use new VL with .simulate() by default once CP's multi-parameter/precision bug is fixed
 # TODO: https://github.com/zama-ai/concrete-ml-internal/issues/3856
 # Indicate if the old simulation method should be used when simulating FHE executions
-USE_OLD_VL = True
+USE_OLD_VL = False
 
 # Debug option for testing round PBS optimization
 # Setting this option to true will make quantizers "round half up"
diff --git a/src/concrete/ml/quantization/quantized_module.py b/src/concrete/ml/quantization/quantized_module.py
index 7f87b597de..1ebc552b4d 100644
--- a/src/concrete/ml/quantization/quantized_module.py
+++ b/src/concrete/ml/quantization/quantized_module.py
@@ -207,7 +207,7 @@ def check_model_is_compiled(self):
             raise AttributeError(
                 "The quantized module is not compiled. Please run compile(...) first before "
                 "executing it in FHE."
-            )
+            )  # pragma: no cover
 
     @property
     def post_processing_params(self) -> Dict[str, Any]:
@@ -696,7 +696,7 @@ def compile(
         if not USE_OLD_VL:
             self.fhe_circuit.enable_fhe_simulation()  # pragma: no cover
 
-        self._is_compiled = True
+        self._is_compiled = True  # pragma: no cover
 
         return self.fhe_circuit
 
diff --git a/src/concrete/ml/sklearn/base.py b/src/concrete/ml/sklearn/base.py
index 4d7ae7251a..467af490be 100644
--- a/src/concrete/ml/sklearn/base.py
+++ b/src/concrete/ml/sklearn/base.py
@@ -640,7 +640,8 @@ def predict(self, X: Data, fhe: Union[FheMode, str] = FheMode.DISABLE) -> numpy.
                     # If the old simulation method should be used
                     if USE_OLD_VL:
                         predict_method = partial(
-                            self.fhe_circuit.graph, p_error=self.fhe_circuit.p_error
+                            self.fhe_circuit.graph,
+                            p_error=self.fhe_circuit.p_error,  # pragma: no cover
                         )
 
                     # Else, use the official simulation method