diff --git a/README.md b/README.md
index 32b82ca..9345ba7 100644
--- a/README.md
+++ b/README.md
@@ -28,8 +28,8 @@ Apply various quantum gates to the qubits:
 
 ```python
 simulator.h(0)      # Hadamard gate
-simulator.x(1)      # Pauli-X gate
-simulator.cx(0, 1)  # Controlled-Not gate
+simulator.t(1)      # π/8 gate
+simulator.cx(0, 2)  # Controlled-Not gate
 ```
 
 ### Custom Gates
@@ -40,7 +40,7 @@ Define and apply custom gates using angles:
 import numpy as np
 
 theta, phi, lambda_ = np.pi/4, np.pi/3, np.pi/2
-simulator.u(0, theta, phi, lambda_)  # Generic gate
+simulator.u(1, theta, phi, lambda_)  # Generic gate
 ```
 
 ### Measurements
@@ -51,7 +51,7 @@ Measure the state of the qubits:
 results = simulator.run(shots=100)
 ```
 
-> {'100': 24, '110': 30, '000': 29, '010': 17}
+> {'010': 24, '101': 28, '111': 25, '000': 23}
 
 ### Circuit Representation
 
@@ -63,15 +63,19 @@ print(simulator)
 
 ```plaintext
 -----------------
-| H |   | C | U |
-|   | X | X |   |
-|   |   |   |   |
+| H |   | C |   |
+|   | T |   | U |
+|   |   | X |   |
 -----------------
 ```
 
 ## Testing
 
-Tests are included in the package to verify its functionality.
+Tests are included in the package to verify its functionality:
+
+```shell
+python3 -m pytest tests/
+```
 
 ## License
 
diff --git a/requirements.txt b/requirements.txt
index 1cc18fc..0dc7293 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-numpy
-pytest
+numpy>=1.16.0
+pytest>=2.1.0
diff --git a/setup.py b/setup.py
index 26c03bc..b257985 100644
--- a/setup.py
+++ b/setup.py
@@ -2,16 +2,16 @@
 
 setup(
     name="qubit_simulator",
-    version="0.0.1",
+    version="0.0.2",
     description="A simple qubit simulator",
     long_description=open("README.md").read(),
     long_description_content_type="text/markdown",
     author="Spencer Churchill",
     author_email="churchill@ionq.com",
     packages=find_packages(),
-    install_requires=["numpy"],
+    install_requires=["numpy>=1.10.1"],
     classifiers=[
-        "Development Status :: 3 - Alpha",
+        "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Science/Research",
         "License :: OSI Approved :: MIT License",
         "Programming Language :: Python :: 3",
diff --git a/tests/test_gates.py b/tests/test_gates.py
new file mode 100644
index 0000000..ce97d4f
--- /dev/null
+++ b/tests/test_gates.py
@@ -0,0 +1,9 @@
+import numpy as np
+from qubit_simulator import Gates
+
+
+def test_create_controlled_gate():
+    # Test for a controlled-X gate
+    controlled_X = Gates.create_controlled_gate(Gates.X, 0, 1, 2)
+    expected_result = np.array([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 0, 1], [0, 0, 1, 0]])
+    assert np.allclose(controlled_X, expected_result)
diff --git a/tests/test_simulator.py b/tests/test_simulator.py
index 8013c3d..ac7b016 100644
--- a/tests/test_simulator.py
+++ b/tests/test_simulator.py
@@ -154,18 +154,21 @@ def test_gate_reversibility():
 
 
 def test_measure_probabilities():
-    shots = 10000
+    shots = 1000
     simulator = QubitSimulator(1)
     simulator.h(0)
     results = simulator.run(shots=shots)
     assert abs(results.get("0", 0) - results.get("1", 0)) < shots / 4
 
 
-def test_str():
+def test_circuit_string():
     simulator = QubitSimulator(3)
     simulator.h(0)
-    simulator.cx(0, 2)
-    expected_string = "---------\n| H | C |\n|   |   |\n|   | X |\n---------"
+    simulator.x(1)
+    simulator.cx(2, 1)
+    expected_string = (
+        "-------------\n| H |   |   |\n|   | X | X |\n|   |   | C |\n-------------"
+    )
     assert str(simulator) == expected_string