diff --git a/Gemfile b/Gemfile
index f8be54514d5b6..a4920bb2f6070 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,7 @@ group :production do
 end
 
 gem "active_record_union", "~> 1.3" # Adds proper union and union_all methods to ActiveRecord::Relation
-gem "acts-as-taggable-on", "~> 6.5" # A tagging plugin for Rails applications that allows for custom tagging along dynamic contexts
+gem "acts-as-taggable-on", "~> 8.1" # A tagging plugin for Rails applications that allows for custom tagging along dynamic contexts
 gem "acts_as_follower", github: "forem/acts_as_follower", branch: "master" # Allow any model to follow any other model
 gem "addressable", "~> 2.7" # A replacement for the URI implementation that is part of Ruby's standard library
 gem "ahoy_email", "~> 1.1" # Email analytics for Rails
diff --git a/Gemfile.lock b/Gemfile.lock
index d0f2eb938a470..671a856e0b617 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -80,8 +80,8 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
       zeitwerk (~> 2.2, >= 2.2.2)
-    acts-as-taggable-on (6.5.0)
-      activerecord (>= 5.0, < 6.1)
+    acts-as-taggable-on (8.1.0)
+      activerecord (>= 5.0, < 6.2)
     addressable (2.7.0)
       public_suffix (>= 2.0.2, < 5.0)
     ahoy_email (1.1.0)
@@ -191,7 +191,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.1.7)
+    concurrent-ruby (1.1.9)
     connection_pool (2.2.3)
     counter_culture (2.7.0)
       activerecord (>= 4.2)
@@ -379,7 +379,7 @@ GEM
     httpclient (2.8.3)
     hypershield (0.2.2)
       activerecord (>= 5)
-    i18n (1.8.5)
+    i18n (1.8.10)
       concurrent-ruby (~> 1.0)
     ice_nine (0.11.2)
     image_processing (1.10.3)
@@ -452,7 +452,7 @@ GEM
     mini_portile2 (2.4.0)
     mini_racer (0.3.1)
       libv8 (~> 8.4.255)
-    minitest (5.14.2)
+    minitest (5.14.4)
     msgpack (1.3.3)
     multi_json (1.15.0)
     multi_xml (0.6.0)
@@ -827,7 +827,7 @@ PLATFORMS
 
 DEPENDENCIES
   active_record_union (~> 1.3)
-  acts-as-taggable-on (~> 6.5)
+  acts-as-taggable-on (~> 8.1)
   acts_as_follower!
   addressable (~> 2.7)
   ahoy_email (~> 1.1)
diff --git a/vendor/cache/acts-as-taggable-on-6.5.0.gem b/vendor/cache/acts-as-taggable-on-6.5.0.gem
deleted file mode 100644
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diff --git a/vendor/cache/acts-as-taggable-on-8.1.0.gem b/vendor/cache/acts-as-taggable-on-8.1.0.gem
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diff --git a/vendor/cache/concurrent-ruby-1.1.7.gem b/vendor/cache/concurrent-ruby-1.1.7.gem
deleted file mode 100644
index ae9b3702ae66b..0000000000000
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diff --git a/vendor/cache/concurrent-ruby-1.1.9.gem b/vendor/cache/concurrent-ruby-1.1.9.gem
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diff --git a/vendor/cache/i18n-1.8.10.gem b/vendor/cache/i18n-1.8.10.gem
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diff --git a/vendor/cache/i18n-1.8.5.gem b/vendor/cache/i18n-1.8.5.gem
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diff --git a/vendor/cache/libv8-8.4.255.0.gem b/vendor/cache/libv8-8.4.255.0.gem
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diff --git a/vendor/cache/minitest-5.14.2.gem b/vendor/cache/minitest-5.14.2.gem
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diff --git a/vendor/cache/minitest-5.14.4.gem b/vendor/cache/minitest-5.14.4.gem
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