diff --git a/trunk/pom.xml b/trunk/pom.xml
index 588179a..35057f3 100644
--- a/trunk/pom.xml
+++ b/trunk/pom.xml
@@ -365,7 +365,7 @@
   <properties>
     <toobs.version>3.1.0-SNAPSHOT</toobs.version>
     <toobs.schema.version>3.1.0</toobs.schema.version>
-    <spring.version>2.5.5</spring.version>
+    <spring.version>5.2.20.RELEASE</spring.version>
     <spring.security.version>2.0.5.RELEASE</spring.security.version>
   </properties>
 </project>
\ No newline at end of file