diff --git a/test/fixtures/minio-fixture/src/main/java/org/elasticsearch/test/fixtures/minio/MinioTestContainer.java b/test/fixtures/minio-fixture/src/main/java/org/elasticsearch/test/fixtures/minio/MinioTestContainer.java
index 4221a7e92d20e..9470dc7a3bef4 100644
--- a/test/fixtures/minio-fixture/src/main/java/org/elasticsearch/test/fixtures/minio/MinioTestContainer.java
+++ b/test/fixtures/minio-fixture/src/main/java/org/elasticsearch/test/fixtures/minio/MinioTestContainer.java
@@ -15,10 +15,12 @@
 
 public final class MinioTestContainer extends DockerEnvironmentAwareTestContainer {
 
+    // NB releases earlier than 2025-05-24 are buggy, see https://github.com/minio/minio/issues/21189, and #127166 for a workaround.
+    // However the 2025-05-24 release is also buggy, see https://github.com/minio/minio/issues/21377, and this has no workaround.
+    // Also https://github.com/minio/minio/issues/21456 seems to affect releases newer than 2025-05-24, see #131815 for workaround.
+    public static final String DOCKER_BASE_IMAGE = "minio/minio:RELEASE.2025-07-23T15-54-02Z";
+
     private static final int servicePort = 9000;
-    // NB releases earlier than 2025-05-24 are buggy, see https://github.com/minio/minio/issues/21189, and #127166 for a workaround
-    // However the 2025-05-24 release is also buggy, see https://github.com/minio/minio/issues/21377, and this has no workaround
-    public static final String DOCKER_BASE_IMAGE = "minio/minio:RELEASE.2025-06-13T11-33-47Z";
     private final boolean enabled;
 
     public MinioTestContainer(boolean enabled, String accessKey, String secretKey, String bucketName) {
diff --git a/x-pack/plugin/snapshot-repo-test-kit/qa/minio/src/javaRestTest/java/org/elasticsearch/repositories/blobstore/testkit/analyze/MinioRepositoryAnalysisRestIT.java b/x-pack/plugin/snapshot-repo-test-kit/qa/minio/src/javaRestTest/java/org/elasticsearch/repositories/blobstore/testkit/analyze/MinioRepositoryAnalysisRestIT.java
index 481e9ec80ec94..199d30e986bb5 100644
--- a/x-pack/plugin/snapshot-repo-test-kit/qa/minio/src/javaRestTest/java/org/elasticsearch/repositories/blobstore/testkit/analyze/MinioRepositoryAnalysisRestIT.java
+++ b/x-pack/plugin/snapshot-repo-test-kit/qa/minio/src/javaRestTest/java/org/elasticsearch/repositories/blobstore/testkit/analyze/MinioRepositoryAnalysisRestIT.java
@@ -34,6 +34,11 @@ public class MinioRepositoryAnalysisRestIT extends AbstractRepositoryAnalysisRes
         .setting("s3.client.repository_test_kit.protocol", () -> "http")
         .setting("s3.client.repository_test_kit.endpoint", minioFixture::getAddress)
         .setting("xpack.security.enabled", "false")
+        // Skip listing of pre-existing uploads during a CAS because MinIO sometimes leaks them; also reduce the delay before proceeding
+        // TODO do not set these if running a MinIO version in which https://github.com/minio/minio/issues/21189
+        // and https://github.com/minio/minio/issues/21456 are both fixed
+        .setting("repository_s3.compare_and_exchange.time_to_live", "-1")
+        .setting("repository_s3.compare_and_exchange.anti_contention_delay", "100ms")
         .setting("xpack.ml.enabled", "false")
         .build();