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backend/requirements.txt

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+Django>=5.1,<5.3
+djangorestframework>=3.15,<4.0
+drf-spectacular>=0.27,<1.0
+django-cors-headers>=4.4,<5.0
+python-dotenv>=1.0,<2.0
+gunicorn>=23.0,<24.0
+psycopg[binary]>=3.2,<4.0
+httpx>=0.27,<1.0
+openpyxl>=3.1,<4.0