diff --git a/Dockerfile b/Dockerfile
index b90282c..a095704 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,7 +17,7 @@ COPY frontend/ ./
 RUN pnpm run build
 
 # Stage 2: Production runtime with Python + FastAPI
-FROM python:3.11-slim
+FROM python:3.14-slim@sha256:cea0e6040540fb2b965b6e7fb5ffa00871e632eef63719f0ea54bca189ce14a6
 
 # Install system dependencies:
 # - curl for the healthcheck