diff --git a/Gemfile.lock b/Gemfile.lock
index 74e71e0d5..877dd4910 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -355,7 +355,7 @@ GEM
       terminal-table (>= 1.5.1)
     i18n_data (1.1.0)
       simple_po_parser (~> 1.1)
-    icalendar (2.12.2)
+    icalendar (2.12.3)
       base64
       ice_cube (~> 0.16)
       logger