diff --git a/xxl-job-admin/pom.xml b/xxl-job-admin/pom.xml
index 54ffa440..e2255282 100644
--- a/xxl-job-admin/pom.xml
+++ b/xxl-job-admin/pom.xml
@@ -54,7 +54,7 @@
org.slf4j
slf4j-log4j12
- 1.7.5
+ 1.7.21
diff --git a/xxl-job-core/pom.xml b/xxl-job-core/pom.xml
index 3faa4c36..befb58b0 100644
--- a/xxl-job-core/pom.xml
+++ b/xxl-job-core/pom.xml
@@ -41,7 +41,7 @@
org.slf4j
slf4j-log4j12
- 1.7.5
+ 1.7.21