diff --git a/Gemfile b/Gemfile
index eedca406..4468f192 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,6 +13,6 @@ group :development do
   gem "rdoc", "6.6.2"
 
   gem "rubocop", "1.59.0", require: false
-  gem "rubocop-minitest", "0.34.3", require: false
+  gem "rubocop-minitest", "0.34.5", require: false
   gem "standard", "1.33.0", require: false
 end
diff --git a/test/test_integration_resultset.rb b/test/test_integration_resultset.rb
index bea28a8f..531d6154 100644
--- a/test/test_integration_resultset.rb
+++ b/test/test_integration_resultset.rb
@@ -92,10 +92,10 @@ def test_real_translation
     @db.execute("insert into foo_real values (42)")
     @db.query("select a, sum(a), typeof(a), typeof(sum(a)) from foo_real") do |result|
       result = result.next
-      assert result[0].is_a?(Float)
-      assert result[1].is_a?(Float)
-      assert result[2].is_a?(String)
-      assert result[3].is_a?(String)
+      assert_kind_of Float, result[0]
+      assert_kind_of Float, result[1]
+      assert_kind_of String, result[2]
+      assert_kind_of String, result[3]
     end
   end
 
diff --git a/test/test_statement.rb b/test/test_statement.rb
index c74f9a22..0b74fdb7 100644
--- a/test/test_statement.rb
+++ b/test/test_statement.rb
@@ -326,7 +326,7 @@ def test_clear_bindings!
     end
 
     def test_stat
-      assert @stmt.stat.is_a?(Hash)
+      assert_kind_of Hash, @stmt.stat
     end
 
     def test_stat_fullscan_steps