diff --git a/src/test/java/org/codelibs/fesen/client/OpenSearch1ClientTest.java b/src/test/java/org/codelibs/fesen/client/OpenSearch1ClientTest.java
index d2e6b86..f83d976 100644
--- a/src/test/java/org/codelibs/fesen/client/OpenSearch1ClientTest.java
+++ b/src/test/java/org/codelibs/fesen/client/OpenSearch1ClientTest.java
@@ -113,7 +113,7 @@ class OpenSearch1ClientTest {
 
     static final String version = "1.3.20";
 
-    static final String imageTag = "opensearchproject/opensearch:" + version;
+    static final String imageTag = "public.ecr.aws/opensearchproject/opensearch:" + version;
 
     static String clusterName = "docker-cluster";
 
diff --git a/src/test/java/org/codelibs/fesen/client/OpenSearch2ClientTest.java b/src/test/java/org/codelibs/fesen/client/OpenSearch2ClientTest.java
index d3dda63..5ac1b16 100644
--- a/src/test/java/org/codelibs/fesen/client/OpenSearch2ClientTest.java
+++ b/src/test/java/org/codelibs/fesen/client/OpenSearch2ClientTest.java
@@ -113,7 +113,7 @@ class OpenSearch2ClientTest {
 
     static final String version = "2.19.4";
 
-    static final String imageTag = "opensearchproject/opensearch:" + version;
+    static final String imageTag = "public.ecr.aws/opensearchproject/opensearch:" + version;
 
     static String clusterName = "docker-cluster";
 
diff --git a/src/test/java/org/codelibs/fesen/client/OpenSearch3ClientTest.java b/src/test/java/org/codelibs/fesen/client/OpenSearch3ClientTest.java
index b6fdf75..fc18c0b 100644
--- a/src/test/java/org/codelibs/fesen/client/OpenSearch3ClientTest.java
+++ b/src/test/java/org/codelibs/fesen/client/OpenSearch3ClientTest.java
@@ -113,7 +113,7 @@ class OpenSearch3ClientTest {
 
     static final String version = "3.5.0";
 
-    static final String imageTag = "opensearchproject/opensearch:" + version;
+    static final String imageTag = "public.ecr.aws/opensearchproject/opensearch:" + version;
 
     static String clusterName = "docker-cluster";