diff --git a/pom.xml b/pom.xml
index 828e19d..b740d66 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,4 +1,4 @@
-    <?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
@@ -352,7 +352,7 @@
         <dependency>
             <groupId>io.swagger</groupId>
             <artifactId>swagger-annotations</artifactId>
-            <version>1.5.20</version>
+            <version>${dhp.swagger-annotations-version}</version>
         </dependency>
         <dependency>
             <groupId>io.swagger.core.v3</groupId>
@@ -438,6 +438,7 @@
     </dependencies>
 
     <properties>
+        <dhp.swagger-annotations-version>1.5.20</dhp.swagger-annotations-version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <maven.compiler.plugin.version>3.6.0</maven.compiler.plugin.version>