diff --git a/spring-4/pom.xml b/spring-4/pom.xml
index 681747c1f6..daf4bd7ff6 100644
--- a/spring-4/pom.xml
+++ b/spring-4/pom.xml
@@ -122,6 +122,7 @@
         <hsqldb.version>2.4.0</hsqldb.version>
         <hikaricp.version>4.0.3</hikaricp.version>
         <log4j2.version>2.17.1</log4j2.version>
+        <logback.version>1.2.7</logback.version>
     </properties>
 
 </project>
\ No newline at end of file
diff --git a/spring-cloud-modules/spring-cloud-bootstrap/config/pom.xml b/spring-cloud-modules/spring-cloud-bootstrap/config/pom.xml
index c1be447822..2c275e2562 100644
--- a/spring-cloud-modules/spring-cloud-bootstrap/config/pom.xml
+++ b/spring-cloud-modules/spring-cloud-bootstrap/config/pom.xml
@@ -43,6 +43,7 @@
 
     <properties>
         <spring-cloud-dependencies.version>2021.0.7</spring-cloud-dependencies.version>
+        <logback.version>1.2.7</logback.version>
     </properties>
 
 </project>
\ No newline at end of file