diff --git a/Gemfile.lock b/Gemfile.lock
index e44104864..b767aaea0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     view_component (3.18.0)
-      activesupport (>= 5.2.0, < 8.0)
+      activesupport (>= 5.2.0, < 8.1)
       concurrent-ruby (~> 1.0)
       method_source (~> 1.0)
 
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 5180e669a..1ab77dd02 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -10,6 +10,10 @@ nav_order: 5
 
 ## main
 
+* Relax Active Support version constraint in gemspec.
+
+    *Simon Fish*
+
 ## 3.18.0
 
 * Enable components to use `@request` and `request` methods/ivars.
diff --git a/view_component.gemspec b/view_component.gemspec
index 1d1120b84..5a22a291b 100644
--- a/view_component.gemspec
+++ b/view_component.gemspec
@@ -29,7 +29,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = ">= 2.7.0"
 
-  spec.add_runtime_dependency "activesupport", [">= 5.2.0", "< 8.0"]
+  spec.add_runtime_dependency "activesupport", [">= 5.2.0", "< 8.1"]
   spec.add_runtime_dependency "method_source", "~> 1.0"
   spec.add_runtime_dependency "concurrent-ruby", "~> 1.0"
   spec.add_development_dependency "allocation_stats", "~> 0.1.5"