diff --git a/Gemfile.lock b/Gemfile.lock
index f5a42aa..ce99e0d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,15 +1,15 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    activesupport (6.0.3.1)
+    activesupport (6.1.7.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-      zeitwerk (~> 2.2, >= 2.2.2)
-    concurrent-ruby (1.1.6)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+      zeitwerk (~> 2.3)
+    concurrent-ruby (1.1.10)
     diff-lcs (1.3)
-    i18n (1.8.2)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     icalendar (2.5.3)
       ice_cube (~> 0.16)
@@ -17,7 +17,7 @@ GEM
       icalendar (~> 2.0)
       ice_cube (~> 0.13)
     ice_cube (0.16.3)
-    minitest (5.14.1)
+    minitest (5.17.0)
     mustermann (1.0.3)
     rack (2.0.8)
     rack-protection (2.0.7)
@@ -42,11 +42,10 @@ GEM
       rack (~> 2.0)
       rack-protection (= 2.0.7)
       tilt (~> 2.0)
-    thread_safe (0.3.6)
     tilt (2.0.10)
-    tzinfo (1.2.7)
-      thread_safe (~> 0.1)
-    zeitwerk (2.3.0)
+    tzinfo (2.0.5)
+      concurrent-ruby (~> 1.0)
+    zeitwerk (2.6.6)
 
 PLATFORMS
   ruby