diff --git a/requirements-dev.txt b/requirements-dev.txt
new file mode 100644
index 0000000..7a5045d
--- /dev/null
+++ b/requirements-dev.txt
@@ -0,0 +1,14 @@
+# CRM System v1.0 - Development / Test Dependencies
+
+# Test framework
+pytest>=8.0
+pytest-asyncio>=0.23
+pytest-cov>=4.1
+httpx>=0.27
+
+# Linting / Type-Check (Phase 7)
+ruff>=0.4
+mypy>=1.10
+
+# Coverage reporting
+coverage[toml]>=7.4