diff --git a/spring-boot-docker-build/.mvn/wrapper/maven-wrapper.properties b/spring-boot-docker-build/.mvn/wrapper/maven-wrapper.properties
index 6c8c0e0..11213b0 100644
--- a/spring-boot-docker-build/.mvn/wrapper/maven-wrapper.properties
+++ b/spring-boot-docker-build/.mvn/wrapper/maven-wrapper.properties
@@ -1 +1 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.4/apache-maven-3.5.4-bin.zip
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
diff --git a/spring-rest-api-client-auth/.mvn/wrapper/maven-wrapper.properties b/spring-rest-api-client-auth/.mvn/wrapper/maven-wrapper.properties
index 6c8c0e0..11213b0 100644
--- a/spring-rest-api-client-auth/.mvn/wrapper/maven-wrapper.properties
+++ b/spring-rest-api-client-auth/.mvn/wrapper/maven-wrapper.properties
@@ -1 +1 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.4/apache-maven-3.5.4-bin.zip
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
diff --git a/spring-rest-data-exploit/.mvn/wrapper/maven-wrapper.properties b/spring-rest-data-exploit/.mvn/wrapper/maven-wrapper.properties
index 7179346..13b218b 100644
--- a/spring-rest-data-exploit/.mvn/wrapper/maven-wrapper.properties
+++ b/spring-rest-data-exploit/.mvn/wrapper/maven-wrapper.properties
@@ -1 +1 @@
-distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.5.4/apache-maven-3.5.4-bin.zip
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
diff --git a/spring-security-radius-login/.mvn/wrapper/maven-wrapper.properties b/spring-security-radius-login/.mvn/wrapper/maven-wrapper.properties
index 9dda3b6..11213b0 100644
--- a/spring-security-radius-login/.mvn/wrapper/maven-wrapper.properties
+++ b/spring-security-radius-login/.mvn/wrapper/maven-wrapper.properties
@@ -1 +1 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.2/apache-maven-3.5.2-bin.zip
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
diff --git a/spring-sftp-download-demo/.mvn/wrapper/maven-wrapper.properties b/spring-sftp-download-demo/.mvn/wrapper/maven-wrapper.properties
index c315043..11213b0 100644
--- a/spring-sftp-download-demo/.mvn/wrapper/maven-wrapper.properties
+++ b/spring-sftp-download-demo/.mvn/wrapper/maven-wrapper.properties
@@ -1 +1 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.0/apache-maven-3.5.0-bin.zip
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
diff --git a/spring-sftp-upload-demo/.mvn/wrapper/maven-wrapper.properties b/spring-sftp-upload-demo/.mvn/wrapper/maven-wrapper.properties
index c315043..11213b0 100644
--- a/spring-sftp-upload-demo/.mvn/wrapper/maven-wrapper.properties
+++ b/spring-sftp-upload-demo/.mvn/wrapper/maven-wrapper.properties
@@ -1 +1 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.0/apache-maven-3.5.0-bin.zip
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
diff --git a/spring-shell-port-scanner/.mvn/wrapper/maven-wrapper.properties b/spring-shell-port-scanner/.mvn/wrapper/maven-wrapper.properties
index 6c8c0e0..11213b0 100644
--- a/spring-shell-port-scanner/.mvn/wrapper/maven-wrapper.properties
+++ b/spring-shell-port-scanner/.mvn/wrapper/maven-wrapper.properties
@@ -1 +1 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.4/apache-maven-3.5.4-bin.zip
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
diff --git a/spring-web-ssl-client-auth/.mvn/wrapper/maven-wrapper.properties b/spring-web-ssl-client-auth/.mvn/wrapper/maven-wrapper.properties
index 6c8c0e0..11213b0 100644
--- a/spring-web-ssl-client-auth/.mvn/wrapper/maven-wrapper.properties
+++ b/spring-web-ssl-client-auth/.mvn/wrapper/maven-wrapper.properties
@@ -1 +1 @@
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.4/apache-maven-3.5.4-bin.zip
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip