diff --git a/Gemfile.lock b/Gemfile.lock
index 53a292e..8c44832 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
     mini_portile2 (2.4.0)
-    nokogiri (1.10.4)
+    nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     pdf-core (0.7.0)
     prawn (2.2.2)