diff --git a/lib/twig/extension/core.rb b/lib/twig/extension/core.rb
index 6c83e3d..2fc9b5f 100644
--- a/lib/twig/extension/core.rb
+++ b/lib/twig/extension/core.rb
@@ -869,7 +869,7 @@ def self.get_attribute(
           if object.respond_to?(:[]) && (
             (object.is_a?(Array) && attribute.is_a?(Integer) && attribute < object.length) ||
             (
-              object.is_a?(Hash) && (
+              object.respond_to?(:key?) && (
                 object.key?(attribute) ||
                 (attribute.respond_to?(:to_sym) && object.key?(attribute.to_sym)) ||
                   (attribute.respond_to?(:to_s) && object.key?(attribute.to_s))
diff --git a/spec/lib/twig/extension/core_spec.rb b/spec/lib/twig/extension/core_spec.rb
index 9022f09..df31e59 100644
--- a/spec/lib/twig/extension/core_spec.rb
+++ b/spec/lib/twig/extension/core_spec.rb
@@ -504,5 +504,19 @@ def foo
         )
       ).to eq(42)
     end
+
+    it 'uses bracket access even when not a hash or array if doing an array call' do
+      object = Class.new(SimpleDelegator).new({ pi: 3.14 })
+
+      expect(
+        described_class.get_attribute(
+          environment,
+          instance_double(Twig::Source),
+          object,
+          :pi,
+          Twig::Template::METHOD_CALL
+        )
+      ).to eq(3.14)
+    end
   end
 end
diff --git a/twig-ruby.gemspec b/twig-ruby.gemspec
index 716b335..3788f76 100644
--- a/twig-ruby.gemspec
+++ b/twig-ruby.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |s|
   s.name        = 'twig_ruby'
-  s.version     = '0.0.7'
+  s.version     = '0.0.8'
   s.summary     = 'Twig Templating for Ruby'
   s.description = ''
   s.authors     = ['Craig Blanchette', 'Fabian Potencier']