diff --git a/themes/walden/static/css/walden.css b/themes/walden/static/css/walden.css
index 942b010..66348ab 100644
--- a/themes/walden/static/css/walden.css
+++ b/themes/walden/static/css/walden.css
@@ -90,7 +90,7 @@ figcaption {
 
 
 .sidebar {
-  background-image: url(../images/background.png);
+  background-image: url(../images/background.jpg);
   position: absolute;
   height: 65px;
 }
@@ -98,7 +98,7 @@ figcaption {
 @media (min-width: 550px) {
 
   .sidebar {
-    background-image: url(../images/background.png);
+    background-image: url(../images/background.jpg);
     background-size: cover;
     position: fixed;
     height: 100%;
diff --git a/themes/walden/static/images/background.jpg b/themes/walden/static/images/background.jpg
new file mode 100644
index 0000000..99ffac0
Binary files /dev/null and b/themes/walden/static/images/background.jpg differ
diff --git a/themes/walden/static/images/background.png b/themes/walden/static/images/background.png
deleted file mode 100644
index 64ff57c..0000000
Binary files a/themes/walden/static/images/background.png and /dev/null differ