diff --git a/build.sbt b/build.sbt
index 5501122..6d9f314 100644
--- a/build.sbt
+++ b/build.sbt
@@ -3,7 +3,7 @@ import sbt.Keys.{crossScalaVersions, scalacOptions}
 val playJsonVersion      = "2.9.2"
 val playVersion          = "2.7.3" // test only
 val playWsVersion        = "2.1.7"
-val slf4jVersion         = "1.7.33"
+val slf4jVersion         = "1.7.35"
 val logbackVersion       = "1.2.10"
 val specs2Version        = "4.13.2"
 val dockerTestkitVersion = "0.11.0"