diff --git a/Plan/build.gradle b/Plan/build.gradle
index 19091c362..5e842d9c9 100644
--- a/Plan/build.gradle
+++ b/Plan/build.gradle
@@ -73,7 +73,7 @@ subprojects {
     ext.h2Version = "1.4.199"
     ext.mysqlVersion = "8.0.18"
     ext.hikariVersion = "3.4.1"
-    ext.slf4jVersion = "1.7.28"
+    ext.slf4jVersion = "1.7.29"
     ext.geoIpVersion = "2.12.0"
     ext.gsonVersion = "2.8.6"
     ext.guavaVersion = "28.0-jre"