diff --git a/examples/powertools-examples-cloudformation/pom.xml b/examples/powertools-examples-cloudformation/pom.xml
index 01aedcaaf..11262647b 100644
--- a/examples/powertools-examples-cloudformation/pom.xml
+++ b/examples/powertools-examples-cloudformation/pom.xml
@@ -10,7 +10,7 @@
     <name>AWS Lambda Powertools for Java library Examples - CloudFormation</name>
 
     <properties>
-        <log4j.version>2.20.0</log4j.version>
+        <log4j.version>2.21.0</log4j.version>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
         <lambda.core.version>1.2.3</lambda.core.version>
diff --git a/examples/powertools-examples-core/cdk/app/pom.xml b/examples/powertools-examples-core/cdk/app/pom.xml
index 57397f187..450dbe898 100644
--- a/examples/powertools-examples-core/cdk/app/pom.xml
+++ b/examples/powertools-examples-core/cdk/app/pom.xml
@@ -10,7 +10,7 @@
     <name>Powertools for AWS Lambda (Java) library Examples - Core</name>
 
     <properties>
-        <log4j.version>2.20.0</log4j.version>
+        <log4j.version>2.21.0</log4j.version>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
     </properties>
diff --git a/examples/powertools-examples-core/sam/pom.xml b/examples/powertools-examples-core/sam/pom.xml
index 93c858556..727456b29 100644
--- a/examples/powertools-examples-core/sam/pom.xml
+++ b/examples/powertools-examples-core/sam/pom.xml
@@ -10,7 +10,7 @@
     <name>Powertools for AWS Lambda (Java) library Examples - Core</name>
 
     <properties>
-        <log4j.version>2.20.0</log4j.version>
+        <log4j.version>2.21.0</log4j.version>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
     </properties>
diff --git a/examples/powertools-examples-core/serverless/pom.xml b/examples/powertools-examples-core/serverless/pom.xml
index faa47c591..af26ff393 100644
--- a/examples/powertools-examples-core/serverless/pom.xml
+++ b/examples/powertools-examples-core/serverless/pom.xml
@@ -10,7 +10,7 @@
     <name>Powertools for AWS Lambda (Java) library Examples - Core</name>
 
     <properties>
-        <log4j.version>2.20.0</log4j.version>
+        <log4j.version>2.21.0</log4j.version>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
     </properties>
diff --git a/examples/powertools-examples-idempotency/pom.xml b/examples/powertools-examples-idempotency/pom.xml
index a98645a29..54161a5b3 100644
--- a/examples/powertools-examples-idempotency/pom.xml
+++ b/examples/powertools-examples-idempotency/pom.xml
@@ -23,7 +23,7 @@
     <name>Powertools for AWS Lambda (Java) library Examples - Idempotency</name>
 
     <properties>
-        <log4j.version>2.20.0</log4j.version>
+        <log4j.version>2.21.0</log4j.version>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
     </properties>
diff --git a/examples/powertools-examples-sqs/pom.xml b/examples/powertools-examples-sqs/pom.xml
index 889fe85da..daa484749 100644
--- a/examples/powertools-examples-sqs/pom.xml
+++ b/examples/powertools-examples-sqs/pom.xml
@@ -8,7 +8,7 @@
     <name>Powertools for AWS Lambda (Java) library Examples - SQS</name>
 
     <properties>
-        <log4j.version>2.20.0</log4j.version>
+        <log4j.version>2.21.0</log4j.version>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
     </properties>
diff --git a/pom.xml b/pom.xml
index 823b09d61..38f9eda73 100644
--- a/pom.xml
+++ b/pom.xml
@@ -73,7 +73,7 @@
     <properties>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <log4j.version>2.20.0</log4j.version>
+        <log4j.version>2.21.0</log4j.version>
         <jackson.version>2.15.3</jackson.version>
         <aspectj.version>1.9.7</aspectj.version>
         <aws.sdk.version>2.21.0</aws.sdk.version>