diff --git a/Gemfile.lock b/Gemfile.lock
index fa6db83..9ac24b7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,18 +1,18 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.0.3.1)
+    activesupport (6.1.7.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-      zeitwerk (~> 2.2, >= 2.2.2)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+      zeitwerk (~> 2.3)
     byebug (11.0.1)
-    concurrent-ruby (1.1.6)
+    concurrent-ruby (1.2.2)
     diff-lcs (1.3)
-    i18n (1.8.2)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
-    minitest (5.14.1)
+    minitest (5.18.0)
     rspec (3.9.0)
       rspec-core (~> 3.9.0)
       rspec-expectations (~> 3.9.0)
@@ -26,10 +26,9 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.9.0)
     rspec-support (3.9.0)
-    thread_safe (0.3.6)
-    tzinfo (1.2.7)
-      thread_safe (~> 0.1)
-    zeitwerk (2.3.0)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
+    zeitwerk (2.6.7)
 
 PLATFORMS
   ruby
diff --git a/declarative_mapper.gemspec b/declarative_mapper.gemspec
index 0ea6767..4acd48a 100644
--- a/declarative_mapper.gemspec
+++ b/declarative_mapper.gemspec
@@ -16,5 +16,5 @@ Gem::Specification.new do |spec|
 
   spec.require_paths = ['lib']
 
-  spec.add_runtime_dependency 'activesupport', ['~> 1.0']
+  spec.add_runtime_dependency 'activesupport', '>= 1', '< 8'
 end