diff --git a/src/wp-content/themes/twentyfifteen/readme.txt b/src/wp-content/themes/twentyfifteen/readme.txt
index f1ee010ccf..17b28342d8 100644
--- a/src/wp-content/themes/twentyfifteen/readme.txt
+++ b/src/wp-content/themes/twentyfifteen/readme.txt
@@ -53,6 +53,7 @@ Available icons: (Linking to any of the following sites will automatically displ
 * Dropbox
 * Facebook
 * Flickr
+* Foursquare
 * GitHub
 * Google+
 * Instagram
diff --git a/src/wp-content/themes/twentyfifteen/style.css b/src/wp-content/themes/twentyfifteen/style.css
index f5f9cf0c4f..bf8ba7aee6 100644
--- a/src/wp-content/themes/twentyfifteen/style.css
+++ b/src/wp-content/themes/twentyfifteen/style.css
@@ -781,6 +781,10 @@ a:focus {
 	content: "\f211";
 }
 
+.social-navigation a[href*="foursquare.com"]:before {
+	content: "\f226";
+}
+
 .social-navigation a[href*="plus.google.com"]:before {
 	content: "\f206";
 }