diff --git a/Gemfile.lock b/Gemfile.lock
index e3e2fd66..1c53700f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -265,7 +265,7 @@ GEM
       concurrent-ruby (~> 1.0)
     i18n_data (0.16.0)
       simple_po_parser (~> 1.1)
-    icalendar (2.7.1)
+    icalendar (2.8.0)
       ice_cube (~> 0.16)
     ice_cube (0.16.4)
     image_processing (1.12.2)