diff --git a/images/Gemfile.lock b/images/Gemfile.lock
index d3a490a..ca1280b 100644
--- a/images/Gemfile.lock
+++ b/images/Gemfile.lock
@@ -1,11 +1,12 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    activesupport (5.2.3)
+    activesupport (6.0.6.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
+      zeitwerk (~> 2.2, >= 2.2.2)
     addressable (2.7.0)
       public_suffix (>= 2.0.2, < 5.0)
     awesome_print (1.8.0)
@@ -14,7 +15,7 @@ GEM
       mime-types
       xml-simple
     builder (3.2.4)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.2.0)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     crass (1.0.4)
@@ -67,7 +68,7 @@ GEM
       mime-types (~> 3.0)
       multi_xml (>= 0.5.2)
     httpclient (2.8.3)
-    i18n (1.6.0)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     json (2.3.0)
     jwt (2.2.1)
@@ -82,7 +83,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.1009)
     mini_portile2 (2.4.0)
-    minitest (5.11.3)
+    minitest (5.17.0)
     multi_json (1.14.1)
     multi_xml (0.6.0)
     multipart-post (2.1.1)
@@ -123,9 +124,8 @@ GEM
       faraday (~> 0.9)
       jwt (>= 1.5, < 3.0)
       multi_json (~> 1.10)
-    slack-notifier (2.3.2)
     thread_safe (0.3.6)
-    tzinfo (1.2.5)
+    tzinfo (1.2.11)
       thread_safe (~> 0.1)
     uber (0.1.0)
     vcr (4.0.0)
@@ -134,6 +134,7 @@ GEM
       crack (>= 0.3.2)
       hashdiff
     xml-simple (1.1.5)
+    zeitwerk (2.6.6)
 
 PLATFORMS
   ruby
@@ -156,7 +157,6 @@ DEPENDENCIES
   piet
   rmagick
   rspec
-  slack-notifier
   vcr
   webmock