diff --git a/REST_XSLT/pom.xml b/REST_XSLT/pom.xml
index 546cf7f..5d3fdca 100644
--- a/REST_XSLT/pom.xml
+++ b/REST_XSLT/pom.xml
@@ -12,7 +12,8 @@
         <maven.compiler.source>11</maven.compiler.source>
         <maven.compiler.target>11</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <jackson.version>2.11.0</jackson.version>
+        <jackson.version>2.14.1</jackson.version>
+        <slf4j.version>2.0.6</slf4j.version>
     </properties>
 
     <build>
@@ -73,6 +74,7 @@
     </build>
 
     <dependencies>
+        <!--   Spark    -->
         <dependency>
             <groupId>com.sparkjava</groupId>
             <artifactId>spark-core</artifactId>
@@ -95,7 +97,7 @@
         <dependency>
             <groupId>net.sf.saxon</groupId>
             <artifactId>Saxon-HE</artifactId>
-            <version>10.3</version>
+            <version>11.4</version>
         </dependency>
         <dependency>
             <groupId>xalan</groupId>
@@ -107,31 +109,32 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-simple</artifactId>
-            <version>1.6.2</version>
+            <version>${slf4j.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>jcl-over-slf4j</artifactId>
-            <version>1.7.0</version>
+            <version>${slf4j.version}</version>
             <scope>runtime</scope>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
-            <version>1.7.0</version>
+            <version>${slf4j.version}</version>
             <scope>runtime</scope>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-log4j12</artifactId>
-            <version>1.7.0</version>
+            <version>${slf4j.version}</version>
             <scope>runtime</scope>
         </dependency>
+
         <dependency>
-            <groupId>log4j</groupId>
-            <artifactId>log4j</artifactId>
-            <version>1.2.14</version>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-core</artifactId>
+            <version>2.19.0</version>
         </dependency>
 
     </dependencies>