diff --git a/Dockerfile b/Dockerfile
index b129d38..f800e16 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 #checkov:skip=CKV_DOCKER_2
 #checkov:skip=CKV_DOCKER_3
 #trivy:ignore:AVD-DS-0002
-FROM python:3.14.6-slim@sha256:cea0e6040540fb2b965b6e7fb5ffa00871e632eef63719f0ea54bca189ce14a6
+FROM python:3.15.0rc1-slim@sha256:d66aca68fc851b8e5b1bc350f7154fe408cf0e85e70c37d18a385591d9bf2743
 LABEL org.opencontainers.image.source https://github.com/github-community-projects/evergreen
 
 WORKDIR /action/workspace