diff --git a/package-lock.json b/package-lock.json
index f0ee05cbb8db..9960e958e47f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,7 +8,7 @@
       "license": "(MIT AND CC-BY-4.0)",
       "dependencies": {
         "@github/failbot": "0.8.0",
-        "@primer/css": "^19.8.2",
+        "@primer/css": "^20.4.1",
         "@primer/octicons": "17.3.0",
         "@primer/octicons-react": "17.3.0",
         "@primer/react": "^34.7.1",
@@ -4073,20 +4073,20 @@
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     "node_modules/@primer/css": {
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-      "resolved": "https://registry.npmjs.org/@primer/css/-/css-19.8.2.tgz",
-      "integrity": "sha512-Zjgk0asxDVj+QY8Ej3DLeJHEMzxlW4ejwmtUk3QzwUJG6R1FzCuGzrTuEN2hFugsvlPDVd1geeKfiskLEjkfOQ==",
+      "version": "20.4.1",
+      "resolved": "https://registry.npmjs.org/@primer/css/-/css-20.4.1.tgz",
+      "integrity": "sha512-jNO8JUmJea/ZMa8w7fWlYT4MWU15raVad04QW1ZZOcqyTyRWEB4Mh31PBj62XB6dfExbKnEC+XX0P4M9FjhwVQ==",
       "dependencies": {
-        "@primer/primitives": "^7.7.0"
+        "@primer/primitives": "^7.9.0"
       },
       "engines": {
         "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
       }
     },
     "node_modules/@primer/css/node_modules/@primer/primitives": {
-      "version": "7.8.3",
-      "resolved": "https://registry.npmjs.org/@primer/primitives/-/primitives-7.8.3.tgz",
-      "integrity": "sha512-04ZwfJhpZ0QFwDrJfCuLX6iOh0BflWDTvuoRA80lQH9xk0RtIg16INbruwwtnbSgnKKXXRSykRRJ5BbxnqufRA=="
+      "version": "7.9.0",
+      "resolved": "https://registry.npmjs.org/@primer/primitives/-/primitives-7.9.0.tgz",
+      "integrity": "sha512-ZHHfwB0z0z6nDJp263gyGIClYDy+rl0nwqyi4qhcv3Cxhkmtf+If2KVjr6FQqBBFfi1wQwUzaax2FBvfEMFBnw=="
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     "node_modules/@primer/octicons": {
       "version": "17.3.0",
@@ -25750,17 +25750,17 @@
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     },
     "@primer/css": {
-      "version": "19.8.2",
-      "resolved": "https://registry.npmjs.org/@primer/css/-/css-19.8.2.tgz",
-      "integrity": "sha512-Zjgk0asxDVj+QY8Ej3DLeJHEMzxlW4ejwmtUk3QzwUJG6R1FzCuGzrTuEN2hFugsvlPDVd1geeKfiskLEjkfOQ==",
+      "version": "20.4.1",
+      "resolved": "https://registry.npmjs.org/@primer/css/-/css-20.4.1.tgz",
+      "integrity": "sha512-jNO8JUmJea/ZMa8w7fWlYT4MWU15raVad04QW1ZZOcqyTyRWEB4Mh31PBj62XB6dfExbKnEC+XX0P4M9FjhwVQ==",
       "requires": {
-        "@primer/primitives": "^7.7.0"
+        "@primer/primitives": "^7.9.0"
       },
       "dependencies": {
         "@primer/primitives": {
-          "version": "7.8.3",
-          "resolved": "https://registry.npmjs.org/@primer/primitives/-/primitives-7.8.3.tgz",
-          "integrity": "sha512-04ZwfJhpZ0QFwDrJfCuLX6iOh0BflWDTvuoRA80lQH9xk0RtIg16INbruwwtnbSgnKKXXRSykRRJ5BbxnqufRA=="
+          "version": "7.9.0",
+          "resolved": "https://registry.npmjs.org/@primer/primitives/-/primitives-7.9.0.tgz",
+          "integrity": "sha512-ZHHfwB0z0z6nDJp263gyGIClYDy+rl0nwqyi4qhcv3Cxhkmtf+If2KVjr6FQqBBFfi1wQwUzaax2FBvfEMFBnw=="
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diff --git a/package.json b/package.json
index 17893be60b74..d9e67f7f809b 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
   ],
   "dependencies": {
     "@github/failbot": "0.8.0",
-    "@primer/css": "^19.8.2",
+    "@primer/css": "^20.4.1",
     "@primer/octicons": "17.3.0",
     "@primer/octicons-react": "17.3.0",
     "@primer/react": "^34.7.1",