diff --git a/src/claimDefinitions/stackexchange.js b/src/claimDefinitions/stackexchange.js
index a923b39..478a7f3 100644
--- a/src/claimDefinitions/stackexchange.js
+++ b/src/claimDefinitions/stackexchange.js
@@ -15,7 +15,7 @@ limitations under the License.
 */
 const E = require('../enums')
 
-const reURI = /^https:\/\/(.*(?:askubuntu|mathoverflow|serverfault|stackapps|stackoverflow)|.+\.stackexchange)\.com\/users\/(\d+)/
+const reURI = /^https:\/\/(.*(?:askubuntu|mathoverflow|serverfault|stackapps|stackoverflow|superuser)|.+\.stackexchange)\.com\/users\/(\d+)/
 const reStackExchange = /\.stackexchange$/
 
 const processURI = (uri) => {