diff --git a/package.json b/package.json
index 882af02e246e..c5d9d6f9992c 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "@elastic/elasticsearch": "7.11.0",
     "@github/failbot": "0.8.2",
     "@primer/behaviors": "^1.3.1",
-    "@primer/css": "^20.2.4",
+    "@primer/css": "^21.0.7",
     "@primer/octicons": "17.10.1",
     "@primer/octicons-react": "17.10.1",
     "@primer/react": "^35.2.2",