diff --git a/README.md b/README.md
index 76cbceb..f816871 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Authorization Library
 
-Authorization library is a library that provides a Spring Security process
+Authorization library is a library that provides a Spring Security (4.x.x) process
 in order to authorize the endpoints of a service base on OpenAIRE Authorities.
 It can be used with two different session strategies, a stateless and
 a Redis http session.
@@ -19,13 +19,14 @@ user's session, but with a cost of an extra http request per request.
     <dependency>
         <groupId>eu.dnetlib</groupId>
         <artifactId>uoa-authorization-library</artifactId>
-        <version>2.1.1</version>
+        <version>2.1.2</version>
     </dependency>
 
 #### Spring Application/Configuration
 
     import eu.dnetlib.uoaauthorizationlibrary.configuration.AuthorizationConfiguration;    
 
+    @PropertySources({@PropertySource("classpath:authorization.properties")})
     @Import(AuthorizationConfiguration.class)
     public class Application {
         public static void main(String[] args) {
@@ -52,7 +53,7 @@ where session is stored.
     <dependency>
         <groupId>eu.dnetlib</groupId>
         <artifactId>uoa-authorization-library</artifactId>
-        <version>2.1.1</version>
+        <version>2.1.2</version>
         <classifier>redis</classifier>
     </dependency>
 
@@ -60,6 +61,7 @@ where session is stored.
 
     import eu.dnetlib.uoaauthorizationlibrary.configuration.AuthorizationConfiguration;    
 
+    @PropertySources({@PropertySource("classpath:authorization.properties")})
     @Import(AuthorizationConfiguration.class)
     public class Application {
         public static void main(String[] args) {
@@ -115,4 +117,36 @@ e.g
         + "@AuthorizationService.manager(#type, #id)) "
     + ")")
     @RequestMapping(value = "{type}/{id}", method = RequestMethod.GET)
-    public Entity getEntity(@PathVariable("type") String type, @PathVariable("id") String id) {
\ No newline at end of file
+    public Entity getEntity(@PathVariable("type") String type, @PathVariable("id") String id) {}
+
+## Spring Security (5.x.x) - Spring boot (2.x.x)
+
+Because of MitreID dependency, in order to use this library
+with redis HttpSession, service has to use spring security (4.x.x).
+The only way to use this library in a project with spring security 5.x.x
+is the Stateless strategy with the following modification in Application
+class:
+
+    import eu.dnetlib.uoaauthorizationlibrary.configuration.AuthorizationConfiguration;    
+
+    @PropertySources({@PropertySource("classpath:authorization.properties")})
+    @Import(AuthorizationConfiguration.class)
+    public class Application {
+
+        public static void main(String[] args) {
+            SpringApplication.run(Application.class, args);
+        }
+
+        @Bean
+        public WebMvcConfigurer corsConfigurer() {
+            return new WebMvcConfigurer() {
+                    @Override
+                    public void addCorsMappings(CorsRegistry registry) {
+                        registry.addMapping("/**")
+                                .allowedMethods("GET", "POST", "PUT", "DELETE", "HEAD", "OPTIONS")
+                                .allowedOriginPatterns("*")
+                                .allowCredentials(true);
+                    }
+            };
+        }   
+    }
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index f8d8118..215e3c7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -79,11 +79,6 @@
 			<artifactId>gson</artifactId>
 			<version>2.8.2</version>
 		</dependency>
-		<dependency>
-			<groupId>log4j</groupId>
-			<artifactId>log4j</artifactId>
-			<version>1.2.17</version>
-		</dependency>
     </dependencies>
 	<build>
 		<plugins>