diff --git a/servlet/xml/java/contacts/build.gradle b/servlet/xml/java/contacts/build.gradle
index ea478f8..bc92692 100644
--- a/servlet/xml/java/contacts/build.gradle
+++ b/servlet/xml/java/contacts/build.gradle
@@ -29,8 +29,8 @@ dependencies {
 	implementation 'org.springframework:spring-context'
 	implementation 'org.springframework:spring-jdbc'
 	implementation 'org.springframework:spring-tx'
-	implementation 'org.slf4j:slf4j-api:1.7.30'
-	implementation 'org.slf4j:slf4j-simple:1.7.30'
+	implementation 'org.slf4j:slf4j-api:2.0.13'
+	implementation 'org.slf4j:slf4j-simple:2.0.13'
 
 	providedCompile "jakarta.servlet:jakarta.servlet-api:6.1.0"
 	providedCompile "org.glassfish.web:jakarta.servlet.jsp.jstl:2.0.0"
diff --git a/servlet/xml/java/dms/build.gradle b/servlet/xml/java/dms/build.gradle
index a5a4313..980ac37 100644
--- a/servlet/xml/java/dms/build.gradle
+++ b/servlet/xml/java/dms/build.gradle
@@ -20,8 +20,8 @@ dependencies {
 	implementation "org.springframework.security:spring-security-acl"
 	implementation "org.springframework.security:spring-security-core"
 	implementation "org.springframework.security:spring-security-config"
-	implementation 'org.slf4j:slf4j-api:1.7.30'
-	implementation 'org.slf4j:slf4j-simple:1.7.30'
+	implementation 'org.slf4j:slf4j-api:2.0.13'
+	implementation 'org.slf4j:slf4j-simple:2.0.13'
 
 	providedCompile "jakarta.servlet:jakarta.servlet-api:6.1.0"
 	providedCompile "org.glassfish.web:jakarta.servlet.jsp.jstl:2.0.0"
diff --git a/servlet/xml/java/helloworld/build.gradle b/servlet/xml/java/helloworld/build.gradle
index 9d440f6..ac69597 100644
--- a/servlet/xml/java/helloworld/build.gradle
+++ b/servlet/xml/java/helloworld/build.gradle
@@ -19,8 +19,8 @@ dependencies {
 
 	implementation "org.springframework.security:spring-security-config"
 	implementation "org.springframework.security:spring-security-web"
-	implementation 'org.slf4j:slf4j-api:1.7.30'
-	implementation 'org.slf4j:slf4j-simple:1.7.30'
+	implementation 'org.slf4j:slf4j-api:2.0.13'
+	implementation 'org.slf4j:slf4j-simple:2.0.13'
 
 	providedCompile "jakarta.servlet:jakarta.servlet-api:6.1.0"
 	providedCompile "org.glassfish.web:jakarta.servlet.jsp.jstl:2.0.0"
diff --git a/servlet/xml/java/preauth/build.gradle b/servlet/xml/java/preauth/build.gradle
index 290ff79..9fe6999 100644
--- a/servlet/xml/java/preauth/build.gradle
+++ b/servlet/xml/java/preauth/build.gradle
@@ -15,8 +15,8 @@ dependencies {
 
 	implementation "org.springframework.security:spring-security-config"
 	implementation "org.springframework.security:spring-security-web"
-	implementation 'org.slf4j:slf4j-api:1.7.30'
-	implementation 'org.slf4j:slf4j-simple:1.7.30'
+	implementation 'org.slf4j:slf4j-api:2.0.13'
+	implementation 'org.slf4j:slf4j-simple:2.0.13'
 
 	providedCompile "jakarta.servlet:jakarta.servlet-api:6.1.0"
 	providedCompile "org.glassfish.web:jakarta.servlet.jsp.jstl:2.0.0"