diff --git a/images/Gemfile.lock b/images/Gemfile.lock
index d3a490a..fb1e499 100644
--- a/images/Gemfile.lock
+++ b/images/Gemfile.lock
@@ -63,8 +63,8 @@ GEM
       os (>= 0.9, < 2.0)
       signet (~> 0.7)
     hashdiff (0.3.9)
-    httparty (0.17.0)
-      mime-types (~> 3.0)
+    httparty (0.21.0)
+      mini_mime (>= 1.0.0)
       multi_xml (>= 0.5.2)
     httpclient (2.8.3)
     i18n (1.6.0)
@@ -78,9 +78,10 @@ GEM
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     memoist (0.16.2)
-    mime-types (3.3.1)
+    mime-types (3.4.1)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2019.1009)
+    mime-types-data (3.2022.0105)
+    mini_mime (1.1.2)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
     multi_json (1.14.1)
@@ -123,7 +124,6 @@ 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)
       thread_safe (~> 0.1)
@@ -156,7 +156,6 @@ DEPENDENCIES
   piet
   rmagick
   rspec
-  slack-notifier
   vcr
   webmock