diff --git a/product_docs/docs/migration_toolkit/54/mtk_rel_notes/index.mdx b/product_docs/docs/migration_toolkit/54/mtk_rel_notes/index.mdx
index fc155381b95..56dfd24e70a 100644
--- a/product_docs/docs/migration_toolkit/54/mtk_rel_notes/index.mdx
+++ b/product_docs/docs/migration_toolkit/54/mtk_rel_notes/index.mdx
@@ -8,6 +8,6 @@ The Migration Toolkit documentation describes the latest version of Migration To
 
 | Version | Release Date | 
 | ------- | ------------ | 
-| [54.0.1](08_mkt_5401_rel_notes) | 30 Apr 2021  |
-| [54.0.0](09_mkt_54_rel_notes) | 5 Nov 2020 |
+| [54.0.1](08_mkt_5401_rel_notes) | 2021 Apr 30   |
+| [54.0.0](09_mkt_54_rel_notes) | 2020 Nov 5  |
 
diff --git a/product_docs/docs/migration_toolkit/55/mtk_rel_notes/06_mkt_5521_rel_notes.mdx b/product_docs/docs/migration_toolkit/55/mtk_rel_notes/06_mkt_5521_rel_notes.mdx
new file mode 100644
index 00000000000..665d8fedc97
--- /dev/null
+++ b/product_docs/docs/migration_toolkit/55/mtk_rel_notes/06_mkt_5521_rel_notes.mdx
@@ -0,0 +1,15 @@
+---
+title: "Version 55.2.1"
+---
+
+New features, enhancements, bug fixes, and other changes in Migration Toolkit 55.2.1 include:
+
+| Type | Description |
+| ---- |------------ |
+| Security Fix | The Migration Toolkit logging is now based on log4j 2.17.1. Previously, it had been based on log4j v1. This change removes the vulnerabilities reported against log4j v1 and ensures that the RCE vulnerabilities discovered and reported against older versions of log4j v2 are bypassed.|
+| Bug Fix | Custom column type mapping is fixed from Oracle RAW type to PostgreSQL/Postgres Plus Advanced Server UUID type. |
+| Bug Fix | `-loaderCount` parameter is disallowed for Sybase, MySQL, and SQL Server databases.
+ |
+| Bug Fix | Fixed duplicate index name issue while migrating from MySQL to PostgreSQL. |
+| Bug Fix | Replace executeQuery with executeUpdate for the query executed on MySQL that is not returning a resultset.|
+
diff --git a/product_docs/docs/migration_toolkit/55/mtk_rel_notes/07_mkt_552_rel_notes.mdx b/product_docs/docs/migration_toolkit/55/mtk_rel_notes/07_mkt_552_rel_notes.mdx
index c2617e50804..1a2ba6ff16d 100644
--- a/product_docs/docs/migration_toolkit/55/mtk_rel_notes/07_mkt_552_rel_notes.mdx
+++ b/product_docs/docs/migration_toolkit/55/mtk_rel_notes/07_mkt_552_rel_notes.mdx
@@ -11,4 +11,4 @@ New features, enhancements, bug fixes, and other changes in Migration Toolkit 55
 | Enhancement| Partition tables with the LIST BY PARTITION clause followed by the AUTOMATIC keyword can now be migrated to target EPAS 13 and 14 databases.|
 | Enhancement | Migration Toolkit now successfully migrates partition tables with the SUBPARTITION TEMPLATE clause to target EPAS 14 databases.|
 | Bug Fix | Fixed the ORA-01795 issue to allow successful migration of more than a thousand users.|
-| Bug Fix | Fixed the ORA-01795 issue to allow successful migration of more than a thousand partitions.|
+| Bug Fix | Fixed the ORA-01795 issue to allow successful migration of more than a thousand partitions.|
\ No newline at end of file
diff --git a/product_docs/docs/migration_toolkit/55/mtk_rel_notes/index.mdx b/product_docs/docs/migration_toolkit/55/mtk_rel_notes/index.mdx
index c9e2cddb9ed..b8d6b2d6009 100644
--- a/product_docs/docs/migration_toolkit/55/mtk_rel_notes/index.mdx
+++ b/product_docs/docs/migration_toolkit/55/mtk_rel_notes/index.mdx
@@ -8,7 +8,8 @@ The Migration Toolkit documentation describes the latest version of Migration To
 
 | Version | Release Date | 
 | ------- | ------------ | 
-| [55.2.0](07_mkt_552_rel_notes) | 2 Dec 2021  |
-| [55.1.0](08_mkt_551_rel_notes) | 20 Sep 2021  |
-| [55.0.0](09_mkt_55_rel_notes) | 19 Mar 2020 |
+| [55.2.1](06_mkt_5521_rel_notes) | 2022 Jan 13   |
+| [55.2.0](07_mkt_552_rel_notes) | 2021 Dec 2   |
+| [55.1.0](08_mkt_551_rel_notes) | 2021 Sep 20   |
+| [55.0.0](09_mkt_55_rel_notes) | 2021 Mar 19  |