diff --git a/manual-testing-sandbox/Dockerfile b/manual-testing-sandbox/Dockerfile
index 0a38833238c..22d148fcd3e 100644
--- a/manual-testing-sandbox/Dockerfile
+++ b/manual-testing-sandbox/Dockerfile
@@ -1,5 +1,5 @@
 # Use a base image
-FROM python:3.9-slim
+FROM python:3.14.3-slim
 
 # Set working directory
 WORKDIR /app