diff --git a/CHANGELOG.md b/CHANGELOG.md
index 511dd77c24e22..6cf1de210f98f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -33,6 +33,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Bump `com.azure:azure-core` from 1.49.1 to 1.51.0 ([#15111](https://github.com/opensearch-project/OpenSearch/pull/15111))
 - Bump `org.xerial.snappy:snappy-java` from 1.1.10.5 to 1.1.10.6 ([#15207](https://github.com/opensearch-project/OpenSearch/pull/15207))
 - Bump `com.azure:azure-xml` from 1.0.0 to 1.1.0 ([#15206](https://github.com/opensearch-project/OpenSearch/pull/15206))
+- Bump `reactor` from 3.5.19 to 3.5.20 ([#15262](https://github.com/opensearch-project/OpenSearch/pull/15262)) 
+- Bump `reactor-netty` from 1.1.21 to 1.1.22 ([#15262](https://github.com/opensearch-project/OpenSearch/pull/15262))
 
 ### Changed
 - Add lower limit for primary and replica batch allocators timeout ([#14979](https://github.com/opensearch-project/OpenSearch/pull/14979))
diff --git a/buildSrc/version.properties b/buildSrc/version.properties
index 08c45ef058716..9d7bbf6f8f769 100644
--- a/buildSrc/version.properties
+++ b/buildSrc/version.properties
@@ -33,8 +33,8 @@ netty             = 4.1.112.Final
 joda              = 2.12.7
 
 # project reactor
-reactor_netty     = 1.1.21
-reactor           = 3.5.19
+reactor_netty     = 1.1.22
+reactor           = 3.5.20
 
 # client dependencies
 httpclient5       = 5.2.3
diff --git a/client/rest/licenses/reactor-core-3.5.19.jar.sha1 b/client/rest/licenses/reactor-core-3.5.19.jar.sha1
deleted file mode 100644
index 04b59d2faae04..0000000000000
--- a/client/rest/licenses/reactor-core-3.5.19.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-1d49ce1d0df79f28d3927da5f4c46a895b94335f
\ No newline at end of file
diff --git a/client/rest/licenses/reactor-core-3.5.20.jar.sha1 b/client/rest/licenses/reactor-core-3.5.20.jar.sha1
new file mode 100644
index 0000000000000..0c80be89f66c8
--- /dev/null
+++ b/client/rest/licenses/reactor-core-3.5.20.jar.sha1
@@ -0,0 +1 @@
+1fc0f91e2b93778a974339d2c24363d7f34f90b4
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/reactor-netty-core-1.1.21.jar.sha1 b/plugins/repository-azure/licenses/reactor-netty-core-1.1.21.jar.sha1
deleted file mode 100644
index 21c16c7430016..0000000000000
--- a/plugins/repository-azure/licenses/reactor-netty-core-1.1.21.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-acb98bd08107287c454ce74e7b1ed8e7a018a662
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/reactor-netty-core-1.1.22.jar.sha1 b/plugins/repository-azure/licenses/reactor-netty-core-1.1.22.jar.sha1
new file mode 100644
index 0000000000000..cc894568c5760
--- /dev/null
+++ b/plugins/repository-azure/licenses/reactor-netty-core-1.1.22.jar.sha1
@@ -0,0 +1 @@
+08356b59b29f86e7142c9daca0434653a64ae64b
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/reactor-netty-http-1.1.21.jar.sha1 b/plugins/repository-azure/licenses/reactor-netty-http-1.1.21.jar.sha1
deleted file mode 100644
index 648df22873d56..0000000000000
--- a/plugins/repository-azure/licenses/reactor-netty-http-1.1.21.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-b83542bb35630ef815b4177e3c670f62e952e695
\ No newline at end of file
diff --git a/plugins/repository-azure/licenses/reactor-netty-http-1.1.22.jar.sha1 b/plugins/repository-azure/licenses/reactor-netty-http-1.1.22.jar.sha1
new file mode 100644
index 0000000000000..2402813f831ce
--- /dev/null
+++ b/plugins/repository-azure/licenses/reactor-netty-http-1.1.22.jar.sha1
@@ -0,0 +1 @@
+2faf64b3822b0512f15d72a325e2826eb8564413
\ No newline at end of file
diff --git a/plugins/transport-reactor-netty4/licenses/reactor-netty-core-1.1.21.jar.sha1 b/plugins/transport-reactor-netty4/licenses/reactor-netty-core-1.1.21.jar.sha1
deleted file mode 100644
index 21c16c7430016..0000000000000
--- a/plugins/transport-reactor-netty4/licenses/reactor-netty-core-1.1.21.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-acb98bd08107287c454ce74e7b1ed8e7a018a662
\ No newline at end of file
diff --git a/plugins/transport-reactor-netty4/licenses/reactor-netty-core-1.1.22.jar.sha1 b/plugins/transport-reactor-netty4/licenses/reactor-netty-core-1.1.22.jar.sha1
new file mode 100644
index 0000000000000..cc894568c5760
--- /dev/null
+++ b/plugins/transport-reactor-netty4/licenses/reactor-netty-core-1.1.22.jar.sha1
@@ -0,0 +1 @@
+08356b59b29f86e7142c9daca0434653a64ae64b
\ No newline at end of file
diff --git a/plugins/transport-reactor-netty4/licenses/reactor-netty-http-1.1.21.jar.sha1 b/plugins/transport-reactor-netty4/licenses/reactor-netty-http-1.1.21.jar.sha1
deleted file mode 100644
index 648df22873d56..0000000000000
--- a/plugins/transport-reactor-netty4/licenses/reactor-netty-http-1.1.21.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-b83542bb35630ef815b4177e3c670f62e952e695
\ No newline at end of file
diff --git a/plugins/transport-reactor-netty4/licenses/reactor-netty-http-1.1.22.jar.sha1 b/plugins/transport-reactor-netty4/licenses/reactor-netty-http-1.1.22.jar.sha1
new file mode 100644
index 0000000000000..2402813f831ce
--- /dev/null
+++ b/plugins/transport-reactor-netty4/licenses/reactor-netty-http-1.1.22.jar.sha1
@@ -0,0 +1 @@
+2faf64b3822b0512f15d72a325e2826eb8564413
\ No newline at end of file
diff --git a/server/licenses/reactor-core-3.5.19.jar.sha1 b/server/licenses/reactor-core-3.5.19.jar.sha1
deleted file mode 100644
index 04b59d2faae04..0000000000000
--- a/server/licenses/reactor-core-3.5.19.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-1d49ce1d0df79f28d3927da5f4c46a895b94335f
\ No newline at end of file
diff --git a/server/licenses/reactor-core-3.5.20.jar.sha1 b/server/licenses/reactor-core-3.5.20.jar.sha1
new file mode 100644
index 0000000000000..0c80be89f66c8
--- /dev/null
+++ b/server/licenses/reactor-core-3.5.20.jar.sha1
@@ -0,0 +1 @@
+1fc0f91e2b93778a974339d2c24363d7f34f90b4
\ No newline at end of file