diff --git a/.gitignore b/.gitignore
index c18dd8d..a3fb408 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,5 @@
 __pycache__/
+*.DS_Store
+.venv
+*.egg-info/
+*/_version.py
\ No newline at end of file
diff --git a/graphix_stim_backend/graphix_stim_backend.py b/graphix_stim_backend/graphix_stim_backend.py
index 3db33dd..66b8a54 100644
--- a/graphix_stim_backend/graphix_stim_backend.py
+++ b/graphix_stim_backend/graphix_stim_backend.py
@@ -18,7 +18,7 @@
 from graphix.noise_models.depolarising import DepolarisingNoise, TwoQubitDepolarisingNoise
 from graphix.optimization import StandardizedPattern
 from graphix.sim.base_backend import Backend, Matrix
-from graphix.sim.statevec import Statevec
+from graphix.sim.statevec import Statevector
 from graphix.simulator import DefaultMeasureMethod
 from graphix.states import BasicStates, PlanarState, State
 from typing_extensions import assert_never, override
@@ -53,14 +53,14 @@ class BasicState(Enum):
     @staticmethod
     def try_from_statevector(sv: Matrix) -> BasicState | None:
         """Return the BasicState corresponding to the parameter, or not if it is not a basic state."""
-        return next((bs for bs in BasicState if np.all(bs.value.to_statevector() == sv)), None)
+        return next((bs for bs in BasicState if np.all(bs.value.to_statevector_numpy() == sv)), None)
 
     @staticmethod
     def try_from_state(s: State) -> BasicState | None:
         """Return the BasicState corresponding to the parameter, or not if it is not a basic state."""
         if isinstance(s, PlanarState):
             return next((bs for bs in BasicState if bs.value == s), None)
-        return BasicState.try_from_statevector(s.to_statevector())
+        return BasicState.try_from_statevector(s.to_statevector_numpy())
 
 
 BASIC_STATE_TO_CLIFFORD = {
@@ -191,7 +191,7 @@ def get_renumbered_graph(pattern: Pattern) -> RenumberedGraph:
     :param pattern: pattern
     :return: the renumbering and the graph
     """
-    graph = pattern.extract_graph()
+    graph = pattern.to_opengraph().graph
     nodes = list(graph.nodes())
     renumbering = {node: i for i, node in enumerate(graph.nodes())}
     renumbered_edges = [(renumbering[u], renumbering[v]) for (u, v) in graph.edges()]
@@ -250,7 +250,7 @@ class _AbstractStimBackend(Backend[stim.TableauSimulator]):
 
     @override
     def add_nodes(self, nodes: Sequence[int], data: Data = BasicStates.PLUS) -> None:
-        state = BasicState.try_from_statevector(Statevec(data).psi)
+        state = BasicState.try_from_statevector(Statevector(data).psi)
 
         if state is None:
             msg = f"Incorrect state value: stim can only prepare stabiliser states {data}."
@@ -372,7 +372,7 @@ def get_target(node: int) -> stim.GateTarget:
         if cmd.kind == CommandKind.N:
             basic_state_or_none = None if fixed_states is None else fixed_states.get(cmd.node)
             if basic_state_or_none is None:
-                basic_state_or_none = BasicState.try_from_statevector(Statevec(cmd.state).psi)
+                basic_state_or_none = BasicState.try_from_statevector(Statevector(cmd.state).psi)
                 if basic_state_or_none is None:
                     msg = f"Non-Pauli preparation: {cmd}"
                     raise ValueError(msg)
diff --git a/graphix_stim_backend/single_pauli_noise_model.py b/graphix_stim_backend/single_pauli_noise_model.py
index 47bdcc2..75cb7b5 100644
--- a/graphix_stim_backend/single_pauli_noise_model.py
+++ b/graphix_stim_backend/single_pauli_noise_model.py
@@ -36,7 +36,7 @@ def nqubits(self) -> int:
         return 1
 
     @override
-    def to_kraus_channel(self) -> KrausChannel:
+    def to_krauschannel(self) -> KrausChannel:
         if self.error_type == "Z":
             return KrausChannel([KrausData(self.prob, Ops.Z)])
 
diff --git a/requirements.txt b/requirements.txt
index 54dbb11..4ca3ac9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-graphix @ git+https://github.com/TeamGraphix/graphix.git
+graphix @ git+https://github.com/TeamGraphix/graphix.git@master
 stim>=1.15,<2
diff --git a/tests/test_graphix_stim_backend.py b/tests/test_graphix_stim_backend.py
index b980e12..4e7c796 100644
--- a/tests/test_graphix_stim_backend.py
+++ b/tests/test_graphix_stim_backend.py
@@ -17,7 +17,7 @@
 from graphix.random_objects import rand_circuit
 from graphix.sim.base_backend import DenseState, Matrix, outer
 from graphix.sim.density_matrix import DensityMatrix
-from graphix.sim.statevec import Statevec
+from graphix.sim.statevec import Statevector
 from graphix.simulator import DefaultMeasureMethod
 from graphix.states import BasicStates
 from numpy.random import PCG64, Generator
@@ -41,17 +41,17 @@ def fidelity(u: Matrix, v: Matrix) -> float:
 
 def compare_backend_results(state1: DenseState, state2: DenseState) -> float:
     """Compute fidelity between two backend states."""
-    if isinstance(state1, Statevec) and isinstance(state2, Statevec):
+    if isinstance(state1, Statevector) and isinstance(state2, Statevector):
         return fidelity(state1.flatten(), state2.flatten())
     if isinstance(state1, DensityMatrix):
         dm1 = state1
-    elif isinstance(state1, Statevec):
+    elif isinstance(state1, Statevector):
         dm1 = DensityMatrix(state1)
     else:
         raise NotImplementedError
     if isinstance(state2, DensityMatrix):
         dm2 = state2
-    elif isinstance(state2, Statevec):
+    elif isinstance(state2, Statevector):
         dm2 = DensityMatrix(state2)
     else:
         raise NotImplementedError
@@ -147,7 +147,7 @@ def simulate_with_noise_model_to_density_matrix(pattern: Pattern, noise_model: N
     pattern.simulate_pattern(backend=backend, noise_model=noise_model)
     second_pattern = backend.to_pattern([], pattern.output_nodes)
     state = second_pattern.simulate_pattern()
-    assert isinstance(state, Statevec)
+    assert isinstance(state, Statevector)
     return outer(state.psi, state.psi.conj())