diff --git a/spring-sftp-download-demo/pom.xml b/spring-sftp-download-demo/pom.xml
index c0c5c14..6761a52 100644
--- a/spring-sftp-download-demo/pom.xml
+++ b/spring-sftp-download-demo/pom.xml
@@ -45,7 +45,7 @@
         <dependency>
             <groupId>commons-codec</groupId>
             <artifactId>commons-codec</artifactId>
-            <version>1.15</version>
+            <version>1.21.0</version>
             <scope>test</scope>
         </dependency>
 
diff --git a/spring-sftp-upload-demo/pom.xml b/spring-sftp-upload-demo/pom.xml
index e5e10ca..a2594cd 100644
--- a/spring-sftp-upload-demo/pom.xml
+++ b/spring-sftp-upload-demo/pom.xml
@@ -45,7 +45,7 @@
         <dependency>
             <groupId>commons-codec</groupId>
             <artifactId>commons-codec</artifactId>
-            <version>1.15</version>
+            <version>1.21.0</version>
             <scope>test</scope>
         </dependency>