diff --git a/requirements-dev.txt b/requirements-dev.txt
index 2fc0763..fb282cf 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -16,7 +16,7 @@ pytest-cov>=7.0.0
 pytest-rerunfailures>=16.4    # flake detection (Pillar 2: Stability)
 pytest-memray>=1.8.0; sys_platform != "win32"  # memory baseline (Pillar 3); memray Linux/macOS only
 pytest-benchmark>=5.2.3       # micro-benchmarks
-pytest-timeout>=2.3.0         # safety net for hung tests
+pytest-timeout>=2.4.0         # safety net for hung tests
 hypothesis>=6.165.0            # property-based testing (Pillar 4: Versatility)
 
 # ── Type checking & quality ─────────────────────────────────────────────────