diff --git a/demo/pom.xml b/demo/pom.xml
index 032096a..e42491d 100644
--- a/demo/pom.xml
+++ b/demo/pom.xml
@@ -139,7 +139,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.2.3</version>
+            <version>${logback.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/jaxrs/pom.xml b/jaxrs/pom.xml
index 89ba4f5..5113dcd 100644
--- a/jaxrs/pom.xml
+++ b/jaxrs/pom.xml
@@ -113,7 +113,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.2.3</version>
+            <version>${logback.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/pom.xml b/pom.xml
index d8ba000..11c1007 100644
--- a/pom.xml
+++ b/pom.xml
@@ -29,6 +29,7 @@
         <junit.version>5.7.1</junit.version>
         <assertj.version>3.19.0</assertj.version>
         <mockito.version>3.8.0</mockito.version>
+        <logback.version>1.2.12</logback.version>
     </properties>
 
     <developers>