diff --git a/Dockerfile b/Dockerfile
index db6a1a9..023c324 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 ARG OPENAPI_SPEC_VALIDATOR_VERSION=0.8.4
 
-FROM python:3.14.3-alpine as builder
+FROM python:3.15.0a8-alpine as builder
 
 ARG OPENAPI_SPEC_VALIDATOR_VERSION
 
@@ -9,7 +9,7 @@ ENV CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse
 RUN apk add --no-cache cargo
 RUN python -m pip wheel --wheel-dir /wheels openapi-spec-validator==${OPENAPI_SPEC_VALIDATOR_VERSION}
 
-FROM python:3.14.3-alpine
+FROM python:3.15.0a8-alpine
 
 ARG OPENAPI_SPEC_VALIDATOR_VERSION