diff --git a/.changes/next-release/bugfix-AWSSDKforJavav2-e05d052.json b/.changes/next-release/bugfix-AWSSDKforJavav2-e05d052.json
new file mode 100644
index 00000000000..dd15318a2a1
--- /dev/null
+++ b/.changes/next-release/bugfix-AWSSDKforJavav2-e05d052.json
@@ -0,0 +1,6 @@
+{
+    "type": "bugfix",
+    "category": "AWS SDK for Java v2",
+    "contributor": "",
+    "description": "Upgrade Jackson to 2.21.3"
+}
diff --git a/pom.xml b/pom.xml
index 38d34ab9e15..e99fc6a76e5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -106,10 +106,10 @@
         <awsjavasdk.version>${project.version}</awsjavasdk.version>
         <awsjavasdk.previous.version>2.44.4</awsjavasdk.previous.version>
         <awsjavasdk.previous-previous.version>2.44.3</awsjavasdk.previous-previous.version>
-        <jackson.version>2.20.2</jackson.version>
-        <jackson.databind.version>2.20.2</jackson.databind.version>
-        <jacksonjr.version>2.20.2</jacksonjr.version>
-        <jackson.annotations.version>2.20</jackson.annotations.version>
+        <jackson.version>2.21.3</jackson.version>
+        <jackson.databind.version>2.21.3</jackson.databind.version>
+        <jacksonjr.version>2.21.3</jacksonjr.version>
+        <jackson.annotations.version>2.21</jackson.annotations.version>
         <eventstream.version>1.0.1</eventstream.version>
         <commons.lang.version>3.14.0</commons.lang.version>
         <wiremock.version>2.32.0</wiremock.version>