diff --git a/vendor/js-test-core/.piston.yml b/vendor/js-test-core/.piston.yml
index 08b93c0..dec12cc 100644
--- a/vendor/js-test-core/.piston.yml
+++ b/vendor/js-test-core/.piston.yml
@@ -1,7 +1,7 @@
 --- 
 format: 1
 handler: 
-  commit: 15f328216186294f2a3b4494449b92d1ac787fbd
+  commit: b161d7fcd06a93938c748b66ad524f3a29c60b3c
   branch: HEAD
 lock: false
 repository_url: git://github.com/pivotal/js-test-core.git
diff --git a/vendor/js-test-core/lib/js_test_core/resources/file.rb b/vendor/js-test-core/lib/js_test_core/resources/file.rb
index 82fadad..026591f 100644
--- a/vendor/js-test-core/lib/js_test_core/resources/file.rb
+++ b/vendor/js-test-core/lib/js_test_core/resources/file.rb
@@ -8,29 +8,29 @@ class File < ThinRest::Resource
         '.jpg' => 'image/jpeg',
         '.jpeg' => 'image/jpeg',
         '.gif' => 'image/gif',
-      }
+        }
 
       property :absolute_path, :relative_path
 
       def get
         extension = ::File.extname(absolute_path)
         content_type = MIME_TYPES[extension] || 'text/html'
-        
-        if !rack_request.env["HTTP_IF_MODIFIED_SINCE"].to_s.empty? && Time.parse(rack_request.env["HTTP_IF_MODIFIED_SINCE"]) >= ::File.mtime(absolute_path)
-          connection.send_head(
-            304,
-            'Content-Type' => content_type,
-            'Last-Modified' => ::File.mtime(absolute_path).rfc822,
-            'Content-Length' => 0
-          )
-        else
-          connection.send_head(
-            200,
-            'Content-Type' => content_type,
-            'Last-Modified' => ::File.mtime(absolute_path).rfc822,
-            'Content-Length' => ::File.size(absolute_path)
-          )
-          connection.terminate_after_sending do
+
+        connection.terminate_after_sending do
+          if !rack_request.env["HTTP_IF_MODIFIED_SINCE"].to_s.empty? && Time.parse(rack_request.env["HTTP_IF_MODIFIED_SINCE"]) >= ::File.mtime(absolute_path)
+            connection.send_head(
+              304,
+                'Content-Type' => content_type,
+                'Last-Modified' => ::File.mtime(absolute_path).rfc822,
+                'Content-Length' => 0
+            )
+          else
+            connection.send_head(
+              200,
+                'Content-Type' => content_type,
+                'Last-Modified' => ::File.mtime(absolute_path).rfc822,
+                'Content-Length' => ::File.size(absolute_path)
+            )
             ::File.open(absolute_path) do |file|
               while !file.eof?
                 connection.send_data(file.read(1024))
@@ -38,12 +38,12 @@ def get
             end
           end
         end
-      end
 
-      def ==(other)
-        return false unless other.class == self.class
-        absolute_path == other.absolute_path && relative_path == other.relative_path
+        def ==(other)
+          return false unless other.class == self.class
+          absolute_path == other.absolute_path && relative_path == other.relative_path
+        end
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/vendor/js-test-core/spec/unit/js_test_core/resources/file_spec.rb b/vendor/js-test-core/spec/unit/js_test_core/resources/file_spec.rb
index 05f281c..ed619c8 100644
--- a/vendor/js-test-core/spec/unit/js_test_core/resources/file_spec.rb
+++ b/vendor/js-test-core/spec/unit/js_test_core/resources/file_spec.rb
@@ -14,8 +14,11 @@ module Resources
           it "returns a 304 response with Content-Length: 0 and Last-Modified: File.mtime" do
             path = "#{public_path}/stylesheets/example.css"
             mock(connection).send_head(304, 'Content-Type' => "text/css", 'Content-Length' => 0, 'Last-Modified' => ::File.mtime(path).rfc822)
-
             connection.receive_data("GET /stylesheets/example.css HTTP/1.1\r\nHost: _\r\nIf-Modified-Since: #{::File.mtime(path).rfc822}\r\n\r\n")
+
+            path_2 = "#{public_path}/javascripts/foo.js"
+            mock(connection).send_head(304, 'Content-Type' => "text/javascript", 'Content-Length' => 0, 'Last-Modified' => ::File.mtime(path_2).rfc822)
+            connection.receive_data("GET /javascripts/foo.js HTTP/1.1\r\nHost: _\r\nIf-Modified-Since: #{::File.mtime(path_2).rfc822}\r\n\r\n")
           end
         end
 
@@ -23,8 +26,11 @@ module Resources
           it "returns a 304 response with Content-Length: 0 and Last-Modified: File.mtime" do
             path = "#{public_path}/stylesheets/example.css"
             mock(connection).send_head(304, 'Content-Type' => "text/css", 'Content-Length' => 0, 'Last-Modified' => ::File.mtime(path).rfc822)
-
             connection.receive_data("GET /stylesheets/example.css HTTP/1.1\r\nHost: _\r\nIf-Modified-Since: #{(::File.mtime(path) + 10).rfc822}\r\n\r\n")
+
+            path_2 = "#{public_path}/javascripts/foo.js"
+            mock(connection).send_head(304, 'Content-Type' => "text/javascript", 'Content-Length' => 0, 'Last-Modified' => ::File.mtime(path_2).rfc822)
+            connection.receive_data("GET /javascripts/foo.js HTTP/1.1\r\nHost: _\r\nIf-Modified-Since: #{(::File.mtime(path_2) + 10).rfc822}\r\n\r\n")
           end
         end
 
@@ -33,8 +39,12 @@ module Resources
             path = "#{public_path}/stylesheets/example.css"
             mock(connection).send_head(200, 'Content-Type' => "text/css", 'Content-Length' => ::File.size(path), 'Last-Modified' => ::File.mtime(path).rfc822)
             mock(connection).send_data(::File.read(path))
-
             connection.receive_data("GET /stylesheets/example.css HTTP/1.1\r\nHost: _\r\nIf-Modified-Since: #{(::File.mtime(path) - 10).rfc822}\r\n\r\n")
+
+            path_2 = "#{public_path}/javascripts/foo.js"
+            mock(connection).send_head(200, 'Content-Type' => "text/javascript", 'Content-Length' => ::File.size(path_2), 'Last-Modified' => ::File.mtime(path_2).rfc822)
+            mock(connection).send_data(::File.read(path_2))
+            connection.receive_data("GET /javascripts/foo.js HTTP/1.1\r\nHost: _\r\nIf-Modified-Since: #{(::File.mtime(path_2) - 10).rfc822}\r\n\r\n")
           end
         end