diff --git a/data/category-scholar-!cn b/data/category-scholar-!cn
index 558d0f66..306bbe0e 100644
--- a/data/category-scholar-!cn
+++ b/data/category-scholar-!cn
@@ -28,6 +28,7 @@ airitilibrary.com
 altmetric.com
 analytictech.com
 annualreviews.org
+aps.org # American Physical Society Sites
 arxiv.org
 asha.org
 berkeley.edu