diff --git a/actionmailer/test/fixtures/attachments/foo.jpg b/actionmailer/test/fixtures/attachments/foo.jpg
index b976fe5e002bf..cbf9f842fff63 100644
Binary files a/actionmailer/test/fixtures/attachments/foo.jpg and b/actionmailer/test/fixtures/attachments/foo.jpg differ
diff --git a/actionmailer/test/fixtures/attachments/test.jpg b/actionmailer/test/fixtures/attachments/test.jpg
index b976fe5e002bf..cbf9f842fff63 100644
Binary files a/actionmailer/test/fixtures/attachments/test.jpg and b/actionmailer/test/fixtures/attachments/test.jpg differ
diff --git a/actionpack/test/fixtures/multipart/ruby_on_rails.jpg b/actionpack/test/fixtures/multipart/ruby_on_rails.jpg
index ed284ea0baa4c..bf58a37b60463 100644
Binary files a/actionpack/test/fixtures/multipart/ruby_on_rails.jpg and b/actionpack/test/fixtures/multipart/ruby_on_rails.jpg differ
diff --git a/guides/assets/images/getting_started/article_with_comments.png b/guides/assets/images/getting_started/article_with_comments.png
index c489e4c00e81c..bfa4811265abd 100644
Binary files a/guides/assets/images/getting_started/article_with_comments.png and b/guides/assets/images/getting_started/article_with_comments.png differ
diff --git a/guides/assets/images/getting_started/rails_welcome.png b/guides/assets/images/getting_started/rails_welcome.png
index baccb113225d2..88fe2067b005f 100644
Binary files a/guides/assets/images/getting_started/rails_welcome.png and b/guides/assets/images/getting_started/rails_welcome.png differ
diff --git a/guides/assets/images/rails_guides_logo.gif b/guides/assets/images/rails_guides_logo.gif
index f7149a0415afa..c0c19941d4db5 100644
Binary files a/guides/assets/images/rails_guides_logo.gif and b/guides/assets/images/rails_guides_logo.gif differ