diff --git a/package-lock.json b/package-lock.json
index b5f59ae51644..25a26814be07 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "dependencies": {
         "@github/failbot": "0.8.0",
         "@primer/components": "^33.1.0",
-        "@primer/css": "^19.1.1",
+        "@primer/css": "^20.7.1",
         "@primer/octicons": "^16.3.0",
         "@primer/octicons-react": "^16.3.0",
         "@react-aria/ssr": "^3.1.0",
@@ -3619,21 +3619,20 @@
       }
     },
     "node_modules/@primer/css": {
-      "version": "19.1.1",
-      "resolved": "https://registry.npmjs.org/@primer/css/-/css-19.1.1.tgz",
-      "integrity": "sha512-QVwdNOJsLxOD6eTR5LDIdLWg2SIy+eZWMK4ywlLd8qZXJCngtJyTNO5PtSzgs0D9jlMS+dzxvlOOV6GcfLu1hw==",
-      "license": "MIT",
+      "version": "20.7.1",
+      "resolved": "https://registry.npmjs.org/@primer/css/-/css-20.7.1.tgz",
+      "integrity": "sha512-NcTKs6PZtT7btF8GlYvoRMq8XBJ8TWGA8VBPG+dAYHm/38gx8JwKSiZG0Dt2Ue1AYoV/75Slp/mUPDnFCmbOOQ==",
       "dependencies": {
-        "@primer/primitives": "^7.2.0"
+        "@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": "7.4.0",
-      "resolved": "https://registry.npmjs.org/@primer/primitives/-/primitives-7.4.0.tgz",
-      "integrity": "sha512-gD6yHXN7YKox/bdUNgxhoSS/WXZVaORK1r4dOAyTrdoPrLV/ucIfRInPyVcTF+Mqr0zcTFJtiMtuA5Y8CSyOEg=="
+      "version": "7.10.0",
+      "resolved": "https://registry.npmjs.org/@primer/primitives/-/primitives-7.10.0.tgz",
+      "integrity": "sha512-DdLHq21e93R9qDHyRuRpytBLY0Up9IwNWMOUgPNW6lRSng4N4+IdUlLS3Ekbasmxfs8Z8vKS8aezeYovQ5qsxQ=="
     },
     "node_modules/@primer/octicons": {
       "version": "16.3.0",
@@ -8410,6 +8409,16 @@
         "node": ">= 0.8.0"
       }
     },
+    "node_modules/escodegen/node_modules/source-map": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+      "dev": true,
+      "optional": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/escodegen/node_modules/type-check": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
@@ -18494,6 +18503,14 @@
         "url": "https://github.com/sponsors/wooorm"
       }
     },
+    "node_modules/rehype-highlight/node_modules/highlight.js": {
+      "version": "11.3.1",
+      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-11.3.1.tgz",
+      "integrity": "sha512-PUhCRnPjLtiLHZAQ5A/Dt5F8cWZeMyj9KRsACsWT+OD6OP0x6dp5OmT5jdx0JgEyPxPZZIPQpRN2TciUT7occw==",
+      "engines": {
+        "node": ">=12.0.0"
+      }
+    },
     "node_modules/rehype-highlight/node_modules/lowlight": {
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/lowlight/-/lowlight-2.4.0.tgz",
@@ -25268,17 +25285,17 @@
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     },
     "@primer/css": {
-      "version": "19.1.1",
-      "resolved": "https://registry.npmjs.org/@primer/css/-/css-19.1.1.tgz",
-      "integrity": "sha512-QVwdNOJsLxOD6eTR5LDIdLWg2SIy+eZWMK4ywlLd8qZXJCngtJyTNO5PtSzgs0D9jlMS+dzxvlOOV6GcfLu1hw==",
+      "version": "20.7.1",
+      "resolved": "https://registry.npmjs.org/@primer/css/-/css-20.7.1.tgz",
+      "integrity": "sha512-NcTKs6PZtT7btF8GlYvoRMq8XBJ8TWGA8VBPG+dAYHm/38gx8JwKSiZG0Dt2Ue1AYoV/75Slp/mUPDnFCmbOOQ==",
       "requires": {
-        "@primer/primitives": "^7.2.0"
+        "@primer/primitives": "^7.9.0"
       },
       "dependencies": {
         "@primer/primitives": {
-          "version": "7.4.0",
-          "resolved": "https://registry.npmjs.org/@primer/primitives/-/primitives-7.4.0.tgz",
-          "integrity": "sha512-gD6yHXN7YKox/bdUNgxhoSS/WXZVaORK1r4dOAyTrdoPrLV/ucIfRInPyVcTF+Mqr0zcTFJtiMtuA5Y8CSyOEg=="
+          "version": "7.10.0",
+          "resolved": "https://registry.npmjs.org/@primer/primitives/-/primitives-7.10.0.tgz",
+          "integrity": "sha512-DdLHq21e93R9qDHyRuRpytBLY0Up9IwNWMOUgPNW6lRSng4N4+IdUlLS3Ekbasmxfs8Z8vKS8aezeYovQ5qsxQ=="
         }
       }
     },
@@ -29220,6 +29237,13 @@
           "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
           "dev": true
         },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true,
+          "optional": true
+        },
         "type-check": {
           "version": "0.3.2",
           "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
@@ -36792,6 +36816,11 @@
             "format": "^0.2.0"
           }
         },
+        "highlight.js": {
+          "version": "11.3.1",
+          "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-11.3.1.tgz",
+          "integrity": "sha512-PUhCRnPjLtiLHZAQ5A/Dt5F8cWZeMyj9KRsACsWT+OD6OP0x6dp5OmT5jdx0JgEyPxPZZIPQpRN2TciUT7occw=="
+        },
         "lowlight": {
           "version": "2.4.0",
           "resolved": "https://registry.npmjs.org/lowlight/-/lowlight-2.4.0.tgz",
diff --git a/package.json b/package.json
index 88b3a63c9a06..39f4748934e1 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   "dependencies": {
     "@github/failbot": "0.8.0",
     "@primer/components": "^33.1.0",
-    "@primer/css": "^19.1.1",
+    "@primer/css": "^20.7.1",
     "@primer/octicons": "^16.3.0",
     "@primer/octicons-react": "^16.3.0",
     "@react-aria/ssr": "^3.1.0",