diff --git a/crypto-symmetric-managed/pom.xml b/crypto-symmetric-managed/pom.xml
index 1c994700..942d4031 100644
--- a/crypto-symmetric-managed/pom.xml
+++ b/crypto-symmetric-managed/pom.xml
@@ -54,7 +54,7 @@
 			<dependency>
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-dependencies</artifactId>
-				<version>3.5.6</version>
+				<version>3.5.9</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>
diff --git a/csp/pom.xml b/csp/pom.xml
index b977ab1a..331280b0 100644
--- a/csp/pom.xml
+++ b/csp/pom.xml
@@ -54,7 +54,7 @@
 			<dependency>
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-dependencies</artifactId>
-				<version>3.5.6</version>
+				<version>3.5.9</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>
diff --git a/demo/pom.xml b/demo/pom.xml
index 8826a36a..f461e2e5 100644
--- a/demo/pom.xml
+++ b/demo/pom.xml
@@ -24,7 +24,7 @@
 		<!-- Dependency Version Groups -->
 		<com.vaadin.version>24.9.2</com.vaadin.version>
 
-		<org.springframework.boot.version>3.5.6</org.springframework.boot.version>
+		<org.springframework.boot.version>3.5.9</org.springframework.boot.version>
 	</properties>
 
 	<modules>
diff --git a/metrics/pom.xml b/metrics/pom.xml
index 45a19603..d86fcc46 100644
--- a/metrics/pom.xml
+++ b/metrics/pom.xml
@@ -54,7 +54,7 @@
 			<dependency>
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-dependencies</artifactId>
-				<version>3.5.6</version>
+				<version>3.5.9</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>
diff --git a/oauth2-oidc-remember-me/pom.xml b/oauth2-oidc-remember-me/pom.xml
index 03121f96..82936a36 100644
--- a/oauth2-oidc-remember-me/pom.xml
+++ b/oauth2-oidc-remember-me/pom.xml
@@ -54,7 +54,7 @@
 			<dependency>
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-dependencies</artifactId>
-				<version>3.5.6</version>
+				<version>3.5.9</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>
diff --git a/oauth2-oidc/pom.xml b/oauth2-oidc/pom.xml
index 2603fe61..6b7a5184 100644
--- a/oauth2-oidc/pom.xml
+++ b/oauth2-oidc/pom.xml
@@ -54,7 +54,7 @@
 			<dependency>
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-dependencies</artifactId>
-				<version>3.5.6</version>
+				<version>3.5.9</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>
diff --git a/vaadin/pom.xml b/vaadin/pom.xml
index 61fe0ad1..97262deb 100644
--- a/vaadin/pom.xml
+++ b/vaadin/pom.xml
@@ -54,7 +54,7 @@
 			<dependency>
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-dependencies</artifactId>
-				<version>3.5.6</version>
+				<version>3.5.9</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>
diff --git a/web-sidecar-actuator/pom.xml b/web-sidecar-actuator/pom.xml
index dc5be28d..f6e8044b 100644
--- a/web-sidecar-actuator/pom.xml
+++ b/web-sidecar-actuator/pom.xml
@@ -54,7 +54,7 @@
 			<dependency>
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-dependencies</artifactId>
-				<version>3.5.6</version>
+				<version>3.5.9</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>
diff --git a/web-sidecar-common/pom.xml b/web-sidecar-common/pom.xml
index 31522aa5..e1cfd5aa 100644
--- a/web-sidecar-common/pom.xml
+++ b/web-sidecar-common/pom.xml
@@ -54,7 +54,7 @@
 			<dependency>
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-dependencies</artifactId>
-				<version>3.5.6</version>
+				<version>3.5.9</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>
diff --git a/web/pom.xml b/web/pom.xml
index 300683e8..4f2358a1 100644
--- a/web/pom.xml
+++ b/web/pom.xml
@@ -54,7 +54,7 @@
 			<dependency>
 				<groupId>org.springframework.boot</groupId>
 				<artifactId>spring-boot-dependencies</artifactId>
-				<version>3.5.6</version>
+				<version>3.5.9</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>