diff --git a/Gemfile.lock b/Gemfile.lock
index 74175ebf7..9af68361a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -213,7 +213,7 @@ GEM
     loofah (2.21.3)
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
-    lumberjack (1.2.8)
+    lumberjack (1.2.9)
     mail (2.8.1)
       mini_mime (>= 0.1.1)
       net-imap