diff --git a/Gemfile.lock b/Gemfile.lock
index 981ae55..cde865b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -52,7 +52,6 @@ GEM
     concurrent-ruby (1.3.7)
     connection_pool (3.0.2)
     csv (3.3.5)
-    docile (1.4.1)
     dotenv (3.2.0)
     drb (2.2.3)
     ffi (1.17.4-x86_64-linux-gnu)
@@ -151,12 +150,7 @@ GEM
     sequel (5.106.0)
       bigdecimal
     shellany (0.0.1)
-    simplecov (0.22.0)
-      docile (~> 1.1)
-      simplecov-html (~> 0.11)
-      simplecov_json_formatter (~> 0.1)
-    simplecov-html (0.13.2)
-    simplecov_json_formatter (0.1.4)
+    simplecov (1.0.1)
     thor (1.5.0)
     thrift (0.24.0)
       logger
@@ -184,7 +178,7 @@ DEPENDENCIES
   sequel-duckdb!
   sequel-hexspace!
   sequelizer!
-  simplecov (~> 0.22)
+  simplecov (~> 1.0)
 
 BUNDLED WITH
    2.6.9
diff --git a/sequelizer.gemspec b/sequelizer.gemspec
index b86828b..a537a72 100644
--- a/sequelizer.gemspec
+++ b/sequelizer.gemspec
@@ -26,7 +26,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rake', '~> 13.3'
   spec.add_development_dependency 'rubocop', '~> 1.0'
   spec.add_development_dependency 'rubocop-minitest', '~> 0.25'
-  spec.add_development_dependency 'simplecov', '~> 0.22'
+  spec.add_development_dependency 'simplecov', '~> 1.0'
   spec.add_dependency 'activesupport', '>= 7', '< 9'
   spec.add_dependency 'dotenv', '>= 2.1', '< 4.0'
   spec.add_dependency 'hashie', '>= 3.2', '< 6.0'