diff --git a/plugins/ingest-attachment/build.gradle b/plugins/ingest-attachment/build.gradle
index b633ecb56769e..8243b48f6f062 100644
--- a/plugins/ingest-attachment/build.gradle
+++ b/plugins/ingest-attachment/build.gradle
@@ -41,7 +41,7 @@ versions << [
   'tika'  : '2.5.0',
   'pdfbox': '2.0.25',
   'poi'   : '5.2.2',
-  'mime4j': '0.8.3'
+  'mime4j': '0.8.11'
 ]
 
 dependencies {
diff --git a/plugins/ingest-attachment/licenses/apache-mime4j-core-0.8.11.jar.sha1 b/plugins/ingest-attachment/licenses/apache-mime4j-core-0.8.11.jar.sha1
new file mode 100644
index 0000000000000..82d9bf2617ce6
--- /dev/null
+++ b/plugins/ingest-attachment/licenses/apache-mime4j-core-0.8.11.jar.sha1
@@ -0,0 +1 @@
+6d1eb5f7b84eaa9d38fca13b761f01c693aef3da
\ No newline at end of file
diff --git a/plugins/ingest-attachment/licenses/apache-mime4j-core-0.8.3.jar.sha1 b/plugins/ingest-attachment/licenses/apache-mime4j-core-0.8.3.jar.sha1
deleted file mode 100644
index 464a34dd97643..0000000000000
--- a/plugins/ingest-attachment/licenses/apache-mime4j-core-0.8.3.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-1179b56c9919c1a8e20d3a528ee4c6cee19bcbe0
\ No newline at end of file
diff --git a/plugins/ingest-attachment/licenses/apache-mime4j-dom-0.8.11.jar.sha1 b/plugins/ingest-attachment/licenses/apache-mime4j-dom-0.8.11.jar.sha1
new file mode 100644
index 0000000000000..7a494aba6a231
--- /dev/null
+++ b/plugins/ingest-attachment/licenses/apache-mime4j-dom-0.8.11.jar.sha1
@@ -0,0 +1 @@
+f0d42ab9a5832b5f5d05afc004b31245b838e0fc
\ No newline at end of file
diff --git a/plugins/ingest-attachment/licenses/apache-mime4j-dom-0.8.3.jar.sha1 b/plugins/ingest-attachment/licenses/apache-mime4j-dom-0.8.3.jar.sha1
deleted file mode 100644
index 4f98753aa0af4..0000000000000
--- a/plugins/ingest-attachment/licenses/apache-mime4j-dom-0.8.3.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-e80733714eb6a70895bfc74a9528c658504c2c83
\ No newline at end of file
diff --git a/release-notes/opensearch.release-notes-1.3.20.md b/release-notes/opensearch.release-notes-1.3.20.md
index fdc49aede4bf4..f73a724976d11 100644
--- a/release-notes/opensearch.release-notes-1.3.20.md
+++ b/release-notes/opensearch.release-notes-1.3.20.md
@@ -1,4 +1,4 @@
-## 2024-12-06 Version 1.3.20 Release Notes
+## 2024-12-09 Version 1.3.20 Release Notes
 
 ### Dependencies
 - Bump `icu4j` from 62.1 to 62.2 ([#15469](https://github.com/opensearch-project/OpenSearch/pull/15469))
@@ -8,6 +8,7 @@
 - Bump `commonsio` to 2.16.0 ([#16780](https://github.com/opensearch-project/OpenSearch/pull/16780))
 - Bump `protobuf-java` to 3.25.5 ([#16792](https://github.com/opensearch-project/OpenSearch/pull/16792))
 - Bump `snappy-java` to 1.1.10.7 ([#16792](https://github.com/opensearch-project/OpenSearch/pull/16792))
+- Bump `mime4j-core` to 0.8.11 ([#16810](https://github.com/opensearch-project/OpenSearch/pull/16810))
 
 ### Fixed
 - Update help output for _cat ([#14722](https://github.com/opensearch-project/OpenSearch/pull/14722))