diff --git a/Gemfile b/Gemfile
index 6dc726ec4..9a4c45712 100644
--- a/Gemfile
+++ b/Gemfile
@@ -171,7 +171,7 @@ gem "rails-assets-diaspora_jsxc", "0.1.5.develop.7", source: "https://gems.diasp
 
 # Tags
 
-gem "acts-as-taggable-on", "8.1.0"
+gem "acts-as-taggable-on", "9.0.1"
 
 # URIs and HTTP
 
diff --git a/Gemfile.lock b/Gemfile.lock
index e25f72561..fb1c79711 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -66,8 +66,8 @@ GEM
       minitest (>= 5.1)
       tzinfo (~> 2.0)
       zeitwerk (~> 2.3)
-    acts-as-taggable-on (8.1.0)
-      activerecord (>= 5.0, < 6.2)
+    acts-as-taggable-on (9.0.1)
+      activerecord (>= 6.0, < 7.1)
     acts_as_api (1.0.1)
       activemodel (>= 3.0.0)
       activesupport (>= 3.0.0)
@@ -797,7 +797,7 @@ PLATFORMS
 DEPENDENCIES
   active_model_serializers (= 0.9.8)
   activerecord-import (= 1.4.0)
-  acts-as-taggable-on (= 8.1.0)
+  acts-as-taggable-on (= 9.0.1)
   acts_as_api (= 1.0.1)
   addressable (= 2.8.0)
   apparition (= 0.6.0)