Dependency Upgrade Master major dependency version upgrades, compatibility analysis, staged upgrade strategies, and comprehensive testing approaches. When to Use This Skill - Upgrading major framework versions - Updating security-vulnerable dependencies - Modernizing legacy dependencies - Resolving dependency conflicts - Planning incremental upgrade paths - Testing compatibility matrices - Automating dependency updates Semantic Versioning Review Dependency Analysis Audit Dependencies Analyze Dependency Tree Compatibility Matrix Staged Upgrade Strategy Phase 1: Planning Phase 2: Incremental Up…