diff --git a/requirements-dev.txt b/requirements-dev.txt
new file mode 100644
index 00000000..b5aec28f
--- /dev/null
+++ b/requirements-dev.txt
@@ -0,0 +1,27 @@
+# ---------------------------------------------------------------------------
+# Development Requirements for TorchQuantum
+# ---------------------------------------------------------------------------
+# This file lists dependencies needed for developing TorchQuantum,
+# including testing, linting, formatting, and building documentation.
+# Use 'pip install -r requirements-dev.txt' to install these.
+# ---------------------------------------------------------------------------
+
+# Include the core library requirements
+-r requirements.txt
+
+# === Code Style & Linting ===
+# Used via pre-commit hooks (as mentioned in README)
+pre-commit>=2.15.0   # Manages git hooks for checks
+black>=22.3.0        # Uncompromising Python code formatter
+# You might add other linters like flake8 or isort here if the project uses them
+
+# === Testing ===
+pytest>=6.0.0        # Standard testing framework for Python
+# Add other testing plugins if needed (e.g., pytest-cov for coverage)
+
+# === Documentation Building ===
+# Dependencies needed to build the documentation locally (from setup.py extras)
+Sphinx>=4.0.0        # Documentation generator tool
+nbsphinx             # Sphinx extension for rendering Jupyter Notebooks
+recommonmark         # Sphinx extension for Markdown support
+# Add any other specific themes or extensions used (e.g., sphinx_rtd_theme)
\ No newline at end of file
diff --git a/setup.py b/setup.py
index abe0e123..650101ee 100644
--- a/setup.py
+++ b/setup.py
@@ -43,7 +43,7 @@
         license="MIT",
         install_requires=requirements,
         extras_require={"doc": ["nbsphinx", "recommonmark"]},
-        python_requires=">=3.5",
+        python_requires=">=3.7",# Align with README
         include_package_data=True,
         packages=find_packages(),
     )