<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <java.version>1.8</java.version>
-        <hibernate.version>5.3.6.Final</hibernate.version>
-        <spring.version>4.3.4.RELEASE</spring.version>
+        <hibernate.version>5.0.11.Final</hibernate.version>
         <javax.persistence.version>1.0.2</javax.persistence.version>
         <common.csv.version>1.4</common.csv.version>
         <jackson.version>2.9.8</jackson.version>
         <dependency>
             <groupId>postgresql</groupId>
             <artifactId>postgresql</artifactId>
-            <version>8.2-511.jdbc3</version>
+            <version>9.1-901-1.jdbc4</version>
         </dependency>
 
         <dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-core</artifactId>
-            <version>5.1.5.RELEASE</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-orm</artifactId>
-            <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-context</artifactId>
-            <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-jdbc</artifactId>
-            <version>${spring.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-webmvc</artifactId>
-            <version>5.1.5.RELEASE</version>
         </dependency>
         <dependency>
             <groupId>org.hibernate</groupId>
             <artifactId>persistence-api</artifactId>
             <version>${javax.persistence.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.apache.tomcat.embed</groupId>
-            <artifactId>tomcat-embed-core</artifactId>
-            <version>${tomcat.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.tomcat.embed</groupId>
-            <artifactId>tomcat-embed-websocket</artifactId>
-            <version>${tomcat.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.data</groupId>
-            <artifactId>spring-data-commons</artifactId>
-            <version>2.1.5.RELEASE</version>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-expression</artifactId>
-            <version>5.1.5.RELEASE</version>
-        </dependency>
-        <dependency>
-            <groupId>ch.qos.logback</groupId>
-            <artifactId>logback-classic</artifactId>
-            <version>1.2.3</version>
-        </dependency>
-        <dependency>
-            <groupId>org.eclipse.jetty</groupId>
-            <artifactId>jetty-http</artifactId>
-            <version>9.4.14.v20181114</version>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-actuator</artifactId>
-            <version>2.1.3.RELEASE</version>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework</groupId>
-            <artifactId>spring-web</artifactId>
-            <version>5.1.5.RELEASE</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.httpcomponents</groupId>
-            <artifactId>httpclient</artifactId>
-            <version>4.5.3</version>
-        </dependency>
-        <dependency>
-            <groupId>org.hibernate</groupId>
-            <artifactId>hibernate-validator</artifactId>
-            <version>5.3.6.Final</version>
-        </dependency>
-        <dependency>
-            <groupId>org.eclipse.jetty</groupId>
-            <artifactId>jetty-util</artifactId>
-            <version>9.4.14.v20181114</version>
-        </dependency>
-        <dependency>
-            <groupId>org.springframework.data</groupId>
-            <artifactId>spring-data-rest-webmvc</artifactId>
-            <version>3.1.5.RELEASE</version>
-        </dependency>
 
         <!-- commons-csv -->
         <dependency>