diff --git a/tests/integration/20-client.sh b/tests/integration/20-client.sh
index 588eccf..f3fa993 100644
--- a/tests/integration/20-client.sh
+++ b/tests/integration/20-client.sh
@@ -24,8 +24,8 @@ set -euo pipefail
 ARCH_IMAGE=docker.io/library/archlinux:base@sha256:3c64b538588416593f69a1aebd2f2ec0f2541b29159f32556fa7def2167147a0
 # tag: 3
 REGISTRY_IMAGE=docker.io/library/registry:3@sha256:ddf754342cfc8acc51a56d5d0ab6af06826461864460636d8bd5c546dab2a7b8
-# tag: 3.13-alpine
-PYTHON_IMAGE=docker.io/library/python:3.13-alpine@sha256:2d9aefe2fef018a7eb2c13064c89c71929800fd2e5dccdbf52ea5da5bb8d929a
+# tag: 3.15-alpine
+PYTHON_IMAGE=docker.io/library/python:3.15-alpine@sha256:ff4d3c9b1a48f646eedd93182aaea385c7a5452f4c8a8cd7cef686babacf4928
 
 FIX="$REPO_ROOT/tests/fixtures/client"
 runtime_detect