diff --git a/requirements-dashboard.txt b/requirements-dashboard.txt
index cfc3fbd..ad19255 100644
--- a/requirements-dashboard.txt
+++ b/requirements-dashboard.txt
@@ -17,7 +17,7 @@
 # Floor raised to 1.49: `use_container_width` warns on every render and
 # Streamlit's own notice says it is removed after 2025-12-31, which has
 # passed. `width="stretch"` replaces it and landed in 1.49.
-streamlit>=1.49.0,<2.0.0
-altair>=5.0.0,<7.0.0
+streamlit>=1.62.0,<2.0.0
+altair>=6.2.2,<7.0.0
 pandas>=2.0.0,<3.0.0
-requests>=2.31.0,<3.0.0
+requests>=2.34.2,<3.0.0
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 23ac318..edfe54a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -27,11 +27,11 @@ matplotlib>=3.8.0,<4.0.0
 seaborn>=0.13.0,<1.0.0
 
 # --- Development Utilities ---
-httpx>=0.27.0,<1.0.0
+httpx>=0.28.1,<1.0.0
 
 # Used by tests/integration/test_llm_grounding.py to probe whether a local
 # Ollama server is running before attempting a live-model check.
-requests>=2.31,<3.0
+requests>=2.34.2,<3.0
 
 # Drives the real dashboard in a real browser for scripts/capture_screenshots.py,
 # which regenerates the README's dashboard images. Needs `playwright install
diff --git a/requirements.txt b/requirements.txt
index d227d31..9d02d6f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,8 +31,8 @@ langchain-openai>=0.1.0,<1.0.0
 openai>=1.0.0,<2.0.0
 
 # --- Layer 4: API Framework ---
-fastapi>=0.110.0,<1.0.0
-uvicorn[standard]>=0.27.0,<1.0.0
+fastapi>=0.141.1,<1.0.0
+uvicorn[standard]>=0.52.4,<1.0.0
 
 # --- Layer 6: Configuration & Utilities ---
 pydantic>=2.0.0,<3.0.0