diff --git a/spec/query_scopes_spec.rb b/spec/query_scopes_spec.rb
index 097940d..9c77396 100644
--- a/spec/query_scopes_spec.rb
+++ b/spec/query_scopes_spec.rb
@@ -138,8 +138,8 @@
   describe "#not_jsonb_contains" do
     it 'generates a negated query' do
       query = klass.not_jsonb_contains(str: 'foo')
-
-      expect(query.to_sql).to match(/WHERE \(?NOT \(products.json_attributes @> \('{"str":"foo"}'\)::jsonb\)/)
+      # Rails 8 has double parens for some reason, previous does not
+      expect(query.to_sql).to match(/WHERE \(?NOT \(?\(products.json_attributes @> \('{"str":"foo"}'\)::jsonb\)\)?/)
     end
   end
 
diff --git a/spec/type/polymorphic_type_spec.rb b/spec/type/polymorphic_type_spec.rb
index e3cc68f..fade198 100644
--- a/spec/type/polymorphic_type_spec.rb
+++ b/spec/type/polymorphic_type_spec.rb
@@ -262,15 +262,18 @@
   describe "not_jsonb_contains" do
     it "can create keypath query" do
       sql = klass.not_jsonb_contains("one_poly.bool" => true).to_sql
-      expect(sql).to match(/WHERE \(?NOT \(products.json_attributes @> \('{\"one_poly\":{\"bool\":true}}'\)/)
+      # Rails 8 has double parens for some reason, previous does not
+      expect(sql).to match(/WHERE \(?NOT \(?\(products.json_attributes @> \('{\"one_poly\":{\"bool\":true}}'\)\)?/)
     end
     it "can create keypath query with type" do
       sql = klass.not_jsonb_contains("one_poly" => {"bool" => true, "type" => "Model2"}).to_sql
-      expect(sql).to match(/WHERE \(?NOT \(products.json_attributes @> \('{\"one_poly\":{\"bool\":true,\"type\":\"Model2\"}}'\)/)
+      # Rails 8 has double parens for some reason, previous does not
+      expect(sql).to match(/WHERE \(?NOT \(?\(products.json_attributes @> \('{\"one_poly\":{\"bool\":true,\"type\":\"Model2\"}}'\)\)?/)
     end
     it "can create keypath query with model arg" do
       sql = klass.not_jsonb_contains("one_poly" => model2.new(bool: true)).to_sql
-      expect(sql).to match(/WHERE \(?NOT \(products.json_attributes @> \('{\"one_poly\":{\"bool\":true,\"type\":\"Model2\"}}'\)/)
+      # Rails 8 has double parens for some reason, previous does not
+      expect(sql).to match(/WHERE \(?NOT \(?\(products.json_attributes @> \('{\"one_poly\":{\"bool\":true,\"type\":\"Model2\"}}'\)\)?/)
     end
   end
 end