diff --git a/client/build.gradle b/client/build.gradle
index 53ce5e3ecf..47c85ba0aa 100644
--- a/client/build.gradle
+++ b/client/build.gradle
@@ -15,7 +15,7 @@ plugins {
 dependencies {
     implementation project(':opensearch-ml-common')
     compileOnly group: 'org.opensearch', name: 'opensearch', version: "${opensearch_version}"
-    testImplementation group: 'junit', name: 'junit', version: '4.12'
+    testImplementation group: 'junit', name: 'junit', version: '4.13.1'
     testImplementation group: 'org.mockito', name: 'mockito-core', version: '4.4.0'
 
 }
diff --git a/common/build.gradle b/common/build.gradle
index cf1e14bc1b..7f034d9759 100644
--- a/common/build.gradle
+++ b/common/build.gradle
@@ -13,7 +13,7 @@ plugins {
 dependencies {
     compileOnly group: 'org.opensearch', name: 'opensearch', version: "${opensearch_version}"
     implementation group: 'org.reflections', name: 'reflections', version: '0.9.12'
-    testImplementation group: 'junit', name: 'junit', version: '4.12'
+    testImplementation group: 'junit', name: 'junit', version: '4.13.1'
     compileOnly "org.opensearch.client:opensearch-rest-client:${opensearch_version}"
     compileOnly "org.opensearch:common-utils:${common_utils_version}"
     testImplementation group: 'org.mockito', name: 'mockito-core', version: '4.4.0'
diff --git a/ml-algorithms/build.gradle b/ml-algorithms/build.gradle
index 301fdfa7e5..08cb9669a6 100644
--- a/ml-algorithms/build.gradle
+++ b/ml-algorithms/build.gradle
@@ -29,7 +29,7 @@ dependencies {
     implementation group: 'io.protostuff', name: 'protostuff-runtime', version: '1.8.0'
     implementation group: 'io.protostuff', name: 'protostuff-api', version: '1.8.0'
     implementation group: 'io.protostuff', name: 'protostuff-collectionschema', version: '1.8.0'
-    testImplementation group: 'junit', name: 'junit', version: '4.12'
+    testImplementation group: 'junit', name: 'junit', version: '4.13.1'
     testImplementation group: 'org.mockito', name: 'mockito-core', version: '4.4.0'
     testImplementation group: 'org.mockito', name: 'mockito-inline', version: '4.4.0'
     implementation group: 'com.google.guava', name: 'guava', version: '31.0.1-jre'