diff --git a/Gemfile.lock b/Gemfile.lock
index ae2b6a5..370e34e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,36 +6,28 @@ PATH
 GEM
   remote: http://rubygems.org/
   specs:
-    activemodel (4.0.2)
-      activesupport (= 4.0.2)
-      builder (~> 3.1.0)
-    activerecord (4.0.2)
-      activemodel (= 4.0.2)
-      activerecord-deprecated_finders (~> 1.0.2)
-      activesupport (= 4.0.2)
-      arel (~> 4.0.0)
-    activerecord-deprecated_finders (1.0.3)
-    activesupport (4.0.2)
-      i18n (~> 0.6, >= 0.6.4)
-      minitest (~> 4.2)
-      multi_json (~> 1.3)
-      thread_safe (~> 0.1)
-      tzinfo (~> 0.3.37)
-    arel (4.0.1)
-    atomic (1.1.14)
-    builder (3.1.4)
-    i18n (0.6.9)
-    minitest (4.7.5)
-    multi_json (1.8.4)
+    activemodel (7.0.4.3)
+      activesupport (= 7.0.4.3)
+    activerecord (7.0.4.3)
+      activemodel (= 7.0.4.3)
+      activesupport (= 7.0.4.3)
+    activesupport (7.0.4.3)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+    concurrent-ruby (1.2.2)
+    i18n (1.12.0)
+      concurrent-ruby (~> 1.0)
+    minitest (5.18.0)
     sqlite3 (1.3.7)
-    thread_safe (0.1.3)
-      atomic
-    tzinfo (0.3.38)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  activerecord (~> 4.0)
+  activerecord (~> 7.0)
   has-bit-field!
   sqlite3
diff --git a/has-bit-field.gemspec b/has-bit-field.gemspec
index 5bdd614..5421683 100644
--- a/has-bit-field.gemspec
+++ b/has-bit-field.gemspec
@@ -14,7 +14,7 @@ Gem::Specification.new do |s|
 
   s.rubyforge_project = "has-bit-field"
   s.add_development_dependency "sqlite3"
-  s.add_development_dependency "activerecord", "~> 4.0"
+  s.add_development_dependency "activerecord", "~> 7.0"
 
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")