diff --git a/Dockerfile b/Dockerfile
index 3ebff91..b1a3e9f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,7 +7,7 @@ COPY frontend/ ./
 RUN npm run build
 
 # Stage 2: Python runtime
-FROM python:3.12-slim AS runtime
+FROM python:3.14-slim AS runtime
 
 # Install uv for fast dependency resolution
 COPY --from=ghcr.io/astral-sh/uv:latest /uv /usr/local/bin/uv
diff --git a/Dockerfile.sandbox b/Dockerfile.sandbox
index bc1dc25..b037154 100644
--- a/Dockerfile.sandbox
+++ b/Dockerfile.sandbox
@@ -1,7 +1,7 @@
 # FormicOS Sandbox — Minimal Python image for code execution (Wave 14)
 # Build: docker build -f Dockerfile.sandbox -t formicos-sandbox:latest .
 
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 # No network access, read-only root, writable /tmp only
 RUN useradd --create-home --shell /bin/false sandbox