diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 846381b..41a6311 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,7 +30,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ['ubuntu-latest', 'windows-2022', 'macos-latest']
-        python: ['3.8', '3.9', '3.10', '3.11']
+        python: ['3.9', '3.10', '3.11', '3.12']
 
     name: "Python ${{ matrix.python }} / ${{ matrix.os }}"
     runs-on: ${{ matrix.os }}
diff --git a/docs/source/tutorial.rst b/docs/source/tutorial.rst
index 2b79c46..e037a75 100644
--- a/docs/source/tutorial.rst
+++ b/docs/source/tutorial.rst
@@ -49,7 +49,7 @@ Then we define a circuit:
     # generate a slightly modified GHZ state generation pattern
     circuit = Circuit(3)
     simple_circ(circuit)
-    pattern = circuit.transpile()
+    pattern = circuit.transpile().pattern
 
     # plot the pattern
     nodes, edges = pattern.get_graph()
diff --git a/graphix_perceval/converter.py b/graphix_perceval/converter.py
index 214dc16..9e7965e 100644
--- a/graphix_perceval/converter.py
+++ b/graphix_perceval/converter.py
@@ -3,7 +3,11 @@
 import graphix
 import perceval as pcvl
 import sympy as sp
-from graphix.extraction import ResourceGraph, ResourceType, get_fusion_network_from_graph
+from graphix.extraction import (
+    ResourceGraph,
+    ResourceType,
+    get_fusion_network_from_graph,
+)
 from perceval import components as comp
 
 from graphix_perceval.clifford import CLIFFORD_TO_PERCEVAL_POLAR
@@ -34,7 +38,7 @@ def pattern2graphstate(
     graph_state = graphix.GraphState(nodes=nodes, edges=edges, vops=vop_init)
     phasedict = {}
     for command in pattern.get_measurement_commands():
-        phasedict[command[1]] = command[3]
+        phasedict[command.node] = command.angle
 
     output_nodes = pattern.output_nodes
     return graph_state, phasedict, output_nodes
diff --git a/graphix_perceval/experiment.py b/graphix_perceval/experiment.py
index 4d070e6..2a87615 100644
--- a/graphix_perceval/experiment.py
+++ b/graphix_perceval/experiment.py
@@ -4,11 +4,11 @@
 import itertools
 import sys
 import warnings
+from _collections_abc import dict_items
 from enum import Enum
 
 import perceval as pcvl
 import sympy as sp
-from _collections_abc import dict_items
 from perceval.algorithm import Sampler
 from perceval.utils import PostSelect
 from tabulate import tabulate
@@ -198,11 +198,9 @@ def get_probability_distribution(
             self.set_postselection()
 
         sampler = Sampler(self.processor)
-        probs = PhotonDistribution(sampler.probs()["results"])
-
-        if format_result:
-            probs.replace_keys(self.output_states)
-
+        sampler.add_iteration()  
+        sampler.sample_count(10000)
+        probs = sampler.probs()
         return probs
 
     def sample(self, num_samples=1024, format_result: bool = True, postselection: bool = True) -> PhotonCount:
@@ -241,11 +239,18 @@ def set_postselection(self):
         """Postselect the results according to the pattern."""
         ps = PostSelect()
         for ph in self.get_readout_photons():
-            ps.eq([2 * ph.id, 2 * ph.id + 1], 1)
+            ps_ = PostSelect(f"[{2*ph.id}, {2*ph.id + 1}] == 1")
+            ps.merge(ps_)
         for ph in self.get_compute_photons():
-            ps.eq([2 * ph.id], 0).eq([2 * ph.id + 1], 1)
+            ps_ = PostSelect(f"[{2*ph.id}] == 0")
+            ps.merge(ps_)
+            ps_ = PostSelect(f"[{2*ph.id + 1}] == 1")
+            ps.merge(ps_)
         for ph in self.get_witness_photons():
-            ps.eq([2 * ph.id], 0).eq([2 * ph.id + 1], 1)
+            ps_ = PostSelect(f"[{2*ph.id}] == 0")
+            ps.merge(ps_)
+            ps_ = PostSelect(f"[{2*ph.id + 1}] == 1")
+            ps.merge(ps_)
 
         self.processor.set_postselection(ps)
 
diff --git a/graphix_perceval/version.py b/graphix_perceval/version.py
index 3b93d0b..27fdca4 100644
--- a/graphix_perceval/version.py
+++ b/graphix_perceval/version.py
@@ -1 +1 @@
-__version__ = "0.0.2"
+__version__ = "0.0.3"
diff --git a/requirements.txt b/requirements.txt
index 11fc390..e325a2f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-graphix>=0.2.8
-perceval-quandela>=0.9.1
+graphix>=0.3.0
+perceval-quandela>=0.12.0
diff --git a/setup.py b/setup.py
index 53746fe..b91b583 100644
--- a/setup.py
+++ b/setup.py
@@ -27,15 +27,15 @@
         "Development Status :: 4 - Beta",
         "Environment :: Console",
         "Intended Audience :: Science/Research",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "License :: OSI Approved :: Apache Software License",
         "Operating System :: OS Independent",
         "Topic :: Scientific/Engineering :: Physics",
     ],
-    "python_requires": ">=3.8,<3.12",
+    "python_requires": ">=3.9,<3.13",
     "install_requires": requirements,
     "extras_require": {},
 }
diff --git a/tests/test_clifford.py b/tests/test_clifford.py
index 47b3657..eae5035 100644
--- a/tests/test_clifford.py
+++ b/tests/test_clifford.py
@@ -1,10 +1,13 @@
 import unittest
 
-from graphix.clifford import CLIFFORD
-from graphix_perceval.clifford import CLIFFORD_TO_PERCEVAL_BS, CLIFFORD_TO_PERCEVAL_POLAR
-from sympy import matrix2numpy
 import numpy as np
 import perceval as pcvl
+from graphix.clifford import CLIFFORD
+from graphix_perceval.clifford import (
+    CLIFFORD_TO_PERCEVAL_BS,
+    CLIFFORD_TO_PERCEVAL_POLAR,
+)
+from sympy import matrix2numpy
 
 
 class TestConverter(unittest.TestCase):
diff --git a/tests/test_converter.py b/tests/test_converter.py
index dbd16b6..1a9db86 100644
--- a/tests/test_converter.py
+++ b/tests/test_converter.py
@@ -2,7 +2,6 @@
 
 import numpy as np
 from graphix import Circuit
-
 from graphix_perceval.converter import to_perceval
 from graphix_perceval.experiment import PhotonDistribution
 
@@ -12,7 +11,7 @@ def test_sampling_circuit_wo_postselection(self):
         circuit = Circuit(2)
         circuit.h(1)
         circuit.cnot(0, 1)
-        pattern = circuit.transpile()
+        pattern = circuit.transpile().pattern
         pattern.standardize()
         pattern.shift_signals()
 
@@ -28,7 +27,7 @@ def test_sampling_circuit_w_postselection(self):
         circuit = Circuit(2)
         circuit.h(1)
         circuit.cnot(0, 1)
-        pattern = circuit.transpile()
+        pattern = circuit.transpile().pattern
         pattern.standardize()
         pattern.shift_signals()
 
@@ -44,7 +43,7 @@ def test_sampling_circuit_w_postselection(self):
     def test_zero_state_creation_wo_pauli_meas(self):
         circuit = Circuit(1)  # initialize with |+>
         circuit.h(0)
-        pattern = circuit.transpile()
+        pattern = circuit.transpile().pattern
         pattern.standardize()
         pattern.shift_signals()
 
@@ -60,7 +59,7 @@ def test_one_state_creation_wo_pauli_meas(self):
         circuit = Circuit(1)  # initialize with |+>
         circuit.h(0)
         circuit.x(0)
-        pattern = circuit.transpile()
+        pattern = circuit.transpile().pattern
         pattern.standardize()
         pattern.shift_signals()
 
@@ -76,7 +75,7 @@ def test_rotated_one_qubit_state_creation_wo_pauli_meas(self):
         circuit = Circuit(1)  # initialize with |+>
         circuit.h(0)
         circuit.rx(0, np.pi / 1.23)
-        pattern = circuit.transpile()
+        pattern = circuit.transpile().pattern
         pattern.standardize()
         pattern.shift_signals()
 
@@ -93,7 +92,7 @@ def test_bell_state_phi_plus_creation_wo_pauli_meas(self):
         circuit = Circuit(2)  # initialize with |+> \otimes |+>
         circuit.h(1)
         circuit.cnot(0, 1)
-        pattern = circuit.transpile()
+        pattern = circuit.transpile().pattern
         pattern.standardize()
         pattern.shift_signals()
 
@@ -110,7 +109,7 @@ def test_bell_state_phi_plus_creation_with_pauli_meas(self):
         circuit = Circuit(2)  # initialize with |+> \otimes |+>
         circuit.h(1)
         circuit.cnot(0, 1)
-        pattern = circuit.transpile()
+        pattern = circuit.transpile().pattern
         pattern.standardize()
         pattern.shift_signals()
         pattern.perform_pauli_measurements()
@@ -130,7 +129,7 @@ def test_ghz_state_creation_with_pauli_meas(self):
         circuit.h(2)
         circuit.cnot(0, 1)
         circuit.cnot(1, 2)
-        pattern = circuit.transpile()
+        pattern = circuit.transpile().pattern
         pattern.standardize()
         pattern.shift_signals()
         pattern.perform_pauli_measurements()
@@ -149,7 +148,7 @@ def test_bell_state_and_ry_with_pauli_meas(self):
         circuit.h(1)
         circuit.cnot(0, 1)
         circuit.ry(1, np.pi / 4)
-        pattern = circuit.transpile()
+        pattern = circuit.transpile().pattern
         pattern.standardize()
         pattern.shift_signals()
         pattern.perform_pauli_measurements()
diff --git a/tox.ini b/tox.ini
index 1a35ab4..65b0c72 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,12 +1,12 @@
 [tox]
-envlist = py38, py39, py310, lint
+envlist = py39, py310, py311, py312, lint
 
 [gh-actions]
 python =
-    3.8: lint, py38
-    3.9: py39
+    3.9: lint, py39
     3.10: py310
     3.11: py311
+    3.12: py312
 
 [testenv]
 description = Run the unit tests