diff --git a/Gemfile.lock b/Gemfile.lock
index 7fc071d..bacd6f2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    base64 (0.2.0)
+    base64 (0.3.0)
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
     faraday (2.13.1)
@@ -30,9 +30,9 @@ GEM
     mime-types (3.3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2021.0901)
-    multi_json (1.15.0)
+    multi_json (1.17.0)
     multipart-post (2.4.1)
-    mustermann (3.0.3)
+    mustermann (3.0.4)
       ruby2_keywords (~> 0.0.1)
     net-http (0.6.0)
       uri
@@ -41,12 +41,13 @@ GEM
     ostruct (0.6.1)
     puma (7.0.4)
       nio4r (~> 2.0)
-    rack (3.1.18)
-    rack-protection (4.1.1)
+    rack (3.2.3)
+    rack-protection (4.2.1)
       base64 (>= 0.1.0)
       logger (>= 1.6.0)
       rack (>= 3.0.0, < 4)
-    rack-session (2.0.0)
+    rack-session (2.1.1)
+      base64 (>= 0.1.0)
       rack (>= 3.0.0)
     rackup (2.2.1)
       rack (>= 3)
@@ -56,18 +57,18 @@ GEM
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
     ruby2_keywords (0.0.5)
-    sinatra (4.1.1)
+    sinatra (4.2.1)
       logger (>= 1.6.0)
       mustermann (~> 3.0)
       rack (>= 3.0.0, < 4)
-      rack-protection (= 4.1.1)
+      rack-protection (= 4.2.1)
       rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
-    sinatra-contrib (4.1.1)
+    sinatra-contrib (4.2.1)
       multi_json (>= 0.0.2)
       mustermann (~> 3.0)
-      rack-protection (= 4.1.1)
-      sinatra (= 4.1.1)
+      rack-protection (= 4.2.1)
+      sinatra (= 4.2.1)
       tilt (~> 2.0)
     slack-ruby-client (2.6.0)
       faraday (>= 2.0)
@@ -78,7 +79,7 @@ GEM
       logger
     temple (0.10.3)
     thor (1.4.0)
-    tilt (2.4.0)
+    tilt (2.6.1)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.7)