diff --git a/Dockerfile b/Dockerfile
index 0cb1f418..a462509e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,7 @@ RUN npm ci
 COPY explorer/ ./
 RUN mkdir -p /app/semantica && npm run build
 
-FROM python:3.14-slim AS runtime
+FROM python:3.13-slim AS runtime
 
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1 \