diff --git a/k2-parent/pom.xml b/k2-parent/pom.xml
index 51ea53f..b29248f 100644
--- a/k2-parent/pom.xml
+++ b/k2-parent/pom.xml
@@ -594,7 +594,7 @@
   <properties>
     <slf4j.version>1.7.21</slf4j.version>
     <spring-boot.version>2.0.5.RELEASE</spring-boot.version>
-    <spring.version>5.1.8.RELEASE</spring.version>
+    <spring.version>5.2.21.RELEASE</spring.version>
     <hibernate.version>5.4.19.Final</hibernate.version>
     <shiro.version>1.2.4</shiro.version>
     <jackson.version>2.9.9</jackson.version>