diff --git a/.github/workflows/python-build.yml b/.github/workflows/python-build.yml
index f2393be..b2a85fd 100644
--- a/.github/workflows/python-build.yml
+++ b/.github/workflows/python-build.yml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.10', '3.11', '3.12']
+        python-version: ['3.10', '3.11', '3.12', '3.13']
         os: [ubuntu-latest, macos-latest, windows-latest]
 
     steps:
diff --git a/pyproject.toml b/pyproject.toml
index 90b79f1..da688dd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,16 +43,16 @@ classifiers = [
 
 
 dependencies = [
-    "typing_extensions       >= 4.1.1",
-    "numpy                   <2.0",                   
-    "scipy                  ",    # v1.10 breaks tests
-    "sympy                   >= 1.6",
+    "typing_extensions >= 4.1.1",
+    "numpy             >= 1.21",
+    "scipy             >= 1.9",
+    "sympy             >= 1.6",
     "networkx",
-    "decorator               < 5.0.0",     # 5.0 breaks networkx dependancy 
+    "decorator         !=5.0", # 5.0 breaks networkx dependancy
     "opt_einsum",
-    "pillow                  != 9.1.0",    # 9.1.0 has problems on some versions of MacOS
-                                        # https://github.com/python-pillow/Pillow/issues/6179
-    "matplotlib",
+    "pillow            != 9.1.0",    # 9.1.0 has problems on some versions of MacOS
+                                     # https://github.com/python-pillow/Pillow/issues/6179
+    "matplotlib         >= 3.5",
   ]
 
 
@@ -85,14 +85,13 @@ docs = [
 ]
 dev = [
     "cirq                    >= 0.8.0",
-    "qiskit                  >= 0.24.0",
-    "qiskit-aer",
-    "ruamel.yaml",                         # Additional requirement for pyquil
-    "pyquil                  >= 2.28.0",
-    "qsimcirq                >= 0.10.2   ; python_version < '3.11'",   # PEP508 environment marker
+    "qiskit                  >= 0.24.0 ",
+    "qiskit-aer ; python_version < '3.14'", # 2026-01-01 qiskit-aer won't install on python 3.14
+    "pyquil     ; python_version < '3.13'", # 2026-01-01 Pyquil won't install on python 3.13 or 3.14
+    "qsimcirq                >= 0.10.2",
     "qutip",
     "qutip-qip",
-    "amazon-braket-sdk",  
+    "amazon-braket-sdk  ; python_version < '3.14'", # 2026-01-01 braket tests failing on python 3.14
 
     "sphinx",
     "sphinxcontrib-bibtex",
@@ -174,6 +173,7 @@ exclude_lines = [
 # Suppresses error about unresolved imports (i.e. from numpy)
 ignore_missing_imports = true
 
+
 # Disallows functions without type annotations
 # disallow_untyped_defs = true
 
diff --git a/quantumflow/decompositions.py b/quantumflow/decompositions.py
index 578b806..9d12d40 100644
--- a/quantumflow/decompositions.py
+++ b/quantumflow/decompositions.py
@@ -186,9 +186,9 @@ def kronecker_decomposition(gate: Gate, euler: str = "ZYZ") -> Circuit:
 
     R = U.reshape(2, 2, 2, 2)
     R = R.transpose(0, 2, 1, 3)
-    R = R.reshape(4, 4)
+    R44 = R.reshape(4, 4)
 
-    u, s, vh = np.linalg.svd(R)
+    u, s, vh = np.linalg.svd(R44)
     A = np.sqrt(s[0]) * u[:, 0].reshape(2, 2)
     B = np.sqrt(s[0]) * vh[0, :].reshape(2, 2)
 
diff --git a/quantumflow/xcirq.py b/quantumflow/xcirq.py
index 562bcce..dc283cd 100644
--- a/quantumflow/xcirq.py
+++ b/quantumflow/xcirq.py
@@ -100,8 +100,7 @@ def run(self, ket: Optional[State] = None) -> State:
             qubits = self.qubits
             ket = zero_state(qubits=qubits)
 
-        tensor = ket.tensor.flatten()
-        tensor = np.asarray(tensor, dtype=np.complex64)
+        tensor = np.asarray(ket.tensor.flatten(), dtype=np.complex64) 
         sim = cirq.Simulator()
         res = sim.simulate(self._cqc, initial_state=tensor)
         tensor = res.state_vector()  # type:ignore  # Needed for cirq <0.10.0
diff --git a/quantumflow/xqiskit_test.py b/quantumflow/xqiskit_test.py
index 36473da..dd73fed 100644
--- a/quantumflow/xqiskit_test.py
+++ b/quantumflow/xqiskit_test.py
@@ -155,6 +155,7 @@ def test_circuit_to_qiskit() -> None:
 
 
 def test_qiskitsimulator() -> None:
+    pytest.importorskip("qiskit-aer")
     circ = qf.Circuit()
     circ += qf.H(1)
     circ += qf.X(0)