diff --git a/Gemfile.lock b/Gemfile.lock
index f21fa4e7..8ce6f6ba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -576,10 +576,8 @@ GEM
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.3)
     sixarm_ruby_unaccent (1.2.0)
-    skylight (3.1.5)
-      skylight-core (= 3.1.5)
-    skylight-core (3.1.5)
-      activesupport (>= 4.2.0)
+    skylight (5.1.1)
+      activesupport (>= 5.2.0)
     sort_alphabetical (1.1.0)
       unicode_utils (>= 1.2.2)
     spring (1.6.3)