diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a8fd645b470c..0d04100ec6a1a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Bump `com.diffplug.spotless` from 6.18.0 to 6.19.0 (#8007)
 - Bump `'com.azure:azure-storage-blob` to 12.22.2 from 12.21.1 ([#8043](https://github.com/opensearch-project/OpenSearch/pull/8043))
 - Bump `org.jruby.joni:joni` from 2.1.48 to 2.2.1 (#8015)
+- Bump `io.projectreactor:reactor-core` from 3.4.18 to 3.5.6 in /plugins/repository-azure ([#8016](https://github.com/opensearch-project/OpenSearch/pull/8016))
 
 ### Changed
 - Replace jboss-annotations-api_1.2_spec with jakarta.annotation-api ([#7836](https://github.com/opensearch-project/OpenSearch/pull/7836))
diff --git a/plugins/repository-azure/build.gradle b/plugins/repository-azure/build.gradle
index 33437f4d10139..66016f4d4146c 100644
--- a/plugins/repository-azure/build.gradle
+++ b/plugins/repository-azure/build.gradle
@@ -57,7 +57,7 @@ dependencies {
   implementation project(':modules:transport-netty4')
   api 'com.azure:azure-storage-blob:12.22.2'
   api 'org.reactivestreams:reactive-streams:1.0.3'
-  api 'io.projectreactor:reactor-core:3.4.18'
+  api 'io.projectreactor:reactor-core:3.5.6'
   api 'io.projectreactor.netty:reactor-netty:1.1.7'
   api 'io.projectreactor.netty:reactor-netty-core:1.1.7'
   api 'io.projectreactor.netty:reactor-netty-http:1.1.7'
@@ -159,17 +159,6 @@ thirdPartyAudit {
     'javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter',
     'javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter$DEFAULT',
     'javax.xml.bind.annotation.adapters.XmlJavaTypeAdapters',
-    'kotlin.collections.ArraysKt',
-    'kotlin.jvm.JvmClassMappingKt',
-    'kotlin.jvm.functions.Function0',
-    'kotlin.jvm.functions.Function1',
-    'kotlin.jvm.internal.FunctionReference',
-    'kotlin.jvm.internal.Intrinsics',
-    'kotlin.jvm.internal.Reflection',
-    'kotlin.jvm.internal.markers.KMappedMarker',
-    'kotlin.reflect.KClass',
-    'kotlin.reflect.KDeclarationContainer',
-    'kotlin.sequences.Sequence',
     'org.osgi.framework.BundleActivator',
     'org.osgi.framework.BundleContext',
     'org.slf4j.impl.StaticLoggerBinder',
@@ -177,6 +166,10 @@ thirdPartyAudit {
     'org.slf4j.impl.StaticMarkerBinder',
     'reactor.blockhound.BlockHound$Builder',
     'reactor.blockhound.integration.BlockHoundIntegration',
+    'io.micrometer.context.ContextRegistry',
+    'io.micrometer.context.ContextSnapshot',
+    'io.micrometer.context.ContextSnapshot$Scope',
+    'io.micrometer.context.ThreadLocalAccessor',
     'io.micrometer.common.KeyValue',
     'io.micrometer.common.KeyValues',
     'io.micrometer.common.docs.KeyName',
diff --git a/plugins/repository-azure/licenses/reactor-core-3.4.18.jar.sha1 b/plugins/repository-azure/licenses/reactor-core-3.4.18.jar.sha1
deleted file mode 100644
index 749954f62c77b..0000000000000
--- a/plugins/repository-azure/licenses/reactor-core-3.4.18.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-29f4f3a4876a65861deffc0f7f189029bcaf7946
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/reactor-core-3.5.6.jar.sha1 b/plugins/repository-azure/licenses/reactor-core-3.5.6.jar.sha1
new file mode 100644
index 0000000000000..ad9b7263e7b38
--- /dev/null
+++ b/plugins/repository-azure/licenses/reactor-core-3.5.6.jar.sha1
@@ -0,0 +1 @@
+027fdc551537b349389176a23a192f11a7a3d7de
\ No newline at end of file