diff --git a/.travis.yml b/.travis.yml
index aa59761e6..65ec7dbe0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,7 @@ env:
   - RAILS_VERSION="~>4.0.0"
   - RAILS_VERSION="~>4.1.0"
   - RAILS_VERSION="~>4.2.0"
-script: "rake spec:all"
+script: "bundle exec rake spec:all"
 before_install:
  - sudo apt-get update
  - sudo apt-get install idn
diff --git a/lib/google/apis/core/upload.rb b/lib/google/apis/core/upload.rb
index 723dbc94f..f02e8ddb0 100644
--- a/lib/google/apis/core/upload.rb
+++ b/lib/google/apis/core/upload.rb
@@ -82,7 +82,7 @@ module Google
         # @raise [Google::Apis::ClientError] if upload source is invalid
         def prepare!
           super
-          if upload_source.is_a?(IO) || upload_source.is_a?(StringIO)
+          if streamable?(upload_source)
             self.upload_io = UploadIO.from_io(upload_source, content_type: upload_content_type)
             @close_io_on_finish = false
           elsif upload_source.is_a?(String)
@@ -97,6 +97,12 @@ module Google
         def release!
           upload_io.close if @close_io_on_finish
         end
+
+        private
+
+        def streamable?(upload_source)
+          upload_source.is_a?(IO) || upload_source.is_a?(StringIO) || upload_source.is_a?(Tempfile)
+        end
       end
 
       # Implementation of the raw upload protocol
diff --git a/spec/google/apis/core/upload_spec.rb b/spec/google/apis/core/upload_spec.rb
index e18c60119..99039f8f0 100644
--- a/spec/google/apis/core/upload_spec.rb
+++ b/spec/google/apis/core/upload_spec.rb
@@ -129,6 +129,20 @@ RSpec.describe Google::Apis::Core::RawUploadCommand do
     end
   end
 
+  context('with Tempfile input') do
+    let(:file) do
+      temp_file = Tempfile.new("tempfile")
+      temp_file.write("Hello world\n")
+      temp_file.rewind
+      temp_file
+    end
+    include_examples 'should upload'
+
+    it 'should not close stream' do
+      expect(file.closed?).to be false
+    end
+  end
+
   context('with file path input') do
     let(:file) { File.join(FIXTURES_DIR, 'files', 'test.txt') }
     include_examples 'should upload'
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index bb85032d5..879b2ebf6 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -19,13 +19,8 @@ GENERATED_DIR = File.expand_path(File.join(ROOT_DIR, 'generated'))
 THIRD_PARTY_DIR = File.expand_path(File.join(ROOT_DIR, 'third_party'))
 FIXTURES_DIR = File.expand_path(File.join(SPEC_DIR, 'fixtures'))
 
-$LOAD_PATH.unshift(SPEC_DIR)
-$LOAD_PATH.unshift(LIB_DIR)
-$LOAD_PATH.unshift(GENERATED_DIR)
-$LOAD_PATH.unshift(THIRD_PARTY_DIR)
 $LOAD_PATH.uniq!
 
-
 if defined?(JRUBY_VERSION)
   puts 'Skipping coverage on JRuby'
 else
diff --git a/spec/spec_helper/load_path_spec.rb b/spec/spec_helper/load_path_spec.rb
new file mode 100644
index 000000000..9f6c70ad3
--- /dev/null
+++ b/spec/spec_helper/load_path_spec.rb
@@ -0,0 +1,33 @@
+# Copyright 2015 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require 'spec_helper'
+
+RSpec.describe $LOAD_PATH do
+  it('should contain SPEC_DIR') do
+    expect($LOAD_PATH).to include(SPEC_DIR)
+  end
+
+  it('should contain LIB_DIR') do
+    expect($LOAD_PATH).to include(LIB_DIR)
+  end
+
+  it('should contain GENERATED_DIR') do
+    expect($LOAD_PATH).to include(GENERATED_DIR)
+  end
+
+  it('should contain THIRD_PARTY_DIR') do
+    expect($LOAD_PATH).to include(THIRD_PARTY_DIR)
+  end
+end