diff --git a/package-lock.json b/package-lock.json
index a20693f69416..5441c22507d1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1212,11 +1212,74 @@
         }
       }
     },
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+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/@github/auto-check-element/-/auto-check-element-5.2.0.tgz",
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+        "@github/mini-throttle": "^1.0.7"
+      },
+      "dependencies": {
+        "@github/mini-throttle": {
+          "version": "1.0.7",
+          "resolved": "https://registry.npmjs.org/@github/mini-throttle/-/mini-throttle-1.0.7.tgz",
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+        }
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+    },
+    "@github/auto-complete-element": {
+      "version": "3.3.4",
+      "resolved": "https://registry.npmjs.org/@github/auto-complete-element/-/auto-complete-element-3.3.4.tgz",
+      "integrity": "sha512-b9SBCLIQGfCI3G0pGYE8rBSUDON5iFKUgHXgAtVdgZii0dnLFxNl5tn1R/RaBEFdzBQPDl9vqu41TF/Hs3w8FA==",
+      "requires": {
+        "@github/combobox-nav": "^2.0.2"
+      }
+    },
+    "@github/catalyst": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/@github/catalyst/-/catalyst-1.6.0.tgz",
+      "integrity": "sha512-u8A+DameixqpeyHzvnJWTGj+wfiskQOYHzSiJscCWVfMkIT3rxnbHMtGh3lMthaRY21nbUOK71WcsCnCrXhBJQ=="
+    },
+    "@github/clipboard-copy-element": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@github/clipboard-copy-element/-/clipboard-copy-element-1.1.2.tgz",
+      "integrity": "sha512-L6CMrcA5we0udafvoSuRCE/Ci/3xrLWKYRGup2IlhxF771bQYsQ2EB1of182pI8ZWM4oxgwzu37+igMeoZjN/A=="
+    },
+    "@github/combobox-nav": {
+      "version": "2.1.7",
+      "resolved": "https://registry.npmjs.org/@github/combobox-nav/-/combobox-nav-2.1.7.tgz",
+      "integrity": "sha512-Webx0W5iTpkk5Chy9dB/1BEUORQ0qrwui8HaaVBiy75W2VOJg96WTuKj1rXENAJ3XTMhdEF53bn0LYfvP0EKvg=="
+    },
+    "@github/details-menu-element": {
+      "version": "1.0.13",
+      "resolved": "https://registry.npmjs.org/@github/details-menu-element/-/details-menu-element-1.0.13.tgz",
+      "integrity": "sha512-gMkii86w/oUP5dq8yOWZn1sgbgtFj3AYETxxtpsqRggZktgd8te4+npAn4Hm+936c/lxmEzXqfjARL/CzGR4+w=="
+    },
+    "@github/image-crop-element": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/@github/image-crop-element/-/image-crop-element-5.0.0.tgz",
+      "integrity": "sha512-Vgm2OwWAs1ESoib/t5sjxsAYo6YTOxxAjWDRxswX7qrqoyCejTZ3hshdo4Ep5e+Mz/GVTZC3rdMtg06dk/eT4g=="
+    },
+    "@github/mini-throttle": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@github/mini-throttle/-/mini-throttle-2.1.0.tgz",
+      "integrity": "sha512-iEeR2OdVCPkdIPUszL8gJnKNu4MR8ANh7y0u/LPyaatYezgaWxUZEzhFntloqQq+HE6MZkFy+cl+xzCNuljOdw=="
+    },
+    "@github/relative-time-element": {
+      "version": "4.2.4",
+      "resolved": "https://registry.npmjs.org/@github/relative-time-element/-/relative-time-element-4.2.4.tgz",
+      "integrity": "sha512-18qgH9FYUHYN9K3z4s35auDHww1dKTU6TacI8JkA5OuvHVa1lTMuSTZ4hIoJngD5+mizcoRMOs6p/yZYMIjsyg=="
+    },
     "@github/rest-api-operations": {
       "version": "3.7.1",
       "resolved": "https://registry.npmjs.org/@github/rest-api-operations/-/rest-api-operations-3.7.1.tgz",
       "integrity": "sha512-ppNyeJAOgCpMqmkBBbSwj2JPfzfpN9ST4xe1G3sLl9OsYSasHTb39s1ZiHAIdIaVAtyeRnGL/3wp8dUqrX6G4A=="
     },
+    "@github/tab-container-element": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/@github/tab-container-element/-/tab-container-element-3.2.0.tgz",
+      "integrity": "sha512-to5ZJuywKK3KX53X1ifOcWjvUTQcBGdQ6Qkhm8L97xQ3ovICag1048M3YMpc+QSdr8xWeCBMnLeMnENqotB0Og=="
+    },
     "@hapi/address": {
       "version": "2.1.4",
       "resolved": "https://registry.npmjs.org/@hapi/address/-/address-2.1.4.tgz",
@@ -2662,22 +2725,18 @@
         "@types/node": ">= 8"
       }
     },
+    "@primer/behaviors": {
+      "version": "1.3.3",
+      "resolved": "https://registry.npmjs.org/@primer/behaviors/-/behaviors-1.3.3.tgz",
+      "integrity": "sha512-iHMRuu8YWDJIdqCi1krx0cyFNeqszNKTOb0dXFu2wQ5BeIqxqPJLD7rjZ2Vjf/+YaPSbWuIQE1H6TaGMMsDfdA=="
+    },
     "@primer/css": {
-      "version": "15.1.0",
-      "resolved": "https://registry.npmjs.org/@primer/css/-/css-15.1.0.tgz",
-      "integrity": "sha512-UmmfjwA26FhOGBMuAfJQOBeRHz9YUcw7khPtifp7K+VyTDEhLnJPRTdApxtivH69vHTkSJ3rh/W1gWYolrLgVA==",
+      "version": "20.8.3",
+      "resolved": "https://registry.npmjs.org/@primer/css/-/css-20.8.3.tgz",
+      "integrity": "sha512-jXF6l3Cjks6PkWTKbSkrg2h/pE+w/HVXZCpDkLcZB3P1d1cAaK8LXeVVBVWSjnKWIMfiNzyHcx1CTUtj5T4Ivg==",
       "requires": {
-        "@primer/octicons": "^9.1.1"
-      },
-      "dependencies": {
-        "@primer/octicons": {
-          "version": "9.6.0",
-          "resolved": "https://registry.npmjs.org/@primer/octicons/-/octicons-9.6.0.tgz",
-          "integrity": "sha512-B5Wzk5izRXXz0JqEXJkVUtqhCXSpUKgqYkVwegMkp5sziBW+ksd9LPbONlCWyyLODwf9GsI2sBXekR7m+JJDBw==",
-          "requires": {
-            "object-assign": "^4.1.1"
-          }
-        }
+        "@primer/primitives": "^7.11.1",
+        "@primer/view-components": "^0.0.120"
       }
     },
     "@primer/octicons": {
@@ -2688,6 +2747,28 @@
         "object-assign": "^4.1.1"
       }
     },
+    "@primer/primitives": {
+      "version": "7.11.1",
+      "resolved": "https://registry.npmjs.org/@primer/primitives/-/primitives-7.11.1.tgz",
+      "integrity": "sha512-Sdss4XG96nqBqrTAyg+RuFOj+U5wkICK8n2hafcyT+lpSlZoIwcbmhyFjmDy9f88FkhHe2q0uCpQ8PjKd8ILTQ=="
+    },
+    "@primer/view-components": {
+      "version": "0.0.120",
+      "resolved": "https://registry.npmjs.org/@primer/view-components/-/view-components-0.0.120.tgz",
+      "integrity": "sha512-C90cNtB3Zl8B+nLPkztYYMBNTaGxUWLrVroG3a8dIEcpGdEZOhsOPOfeptpyPMolX7DWag/hfzBXBp0i7TawDg==",
+      "requires": {
+        "@github/auto-check-element": "^5.2.0",
+        "@github/auto-complete-element": "^3.3.4",
+        "@github/catalyst": "^1.6.0",
+        "@github/clipboard-copy-element": "^1.1.2",
+        "@github/details-menu-element": "^1.0.12",
+        "@github/image-crop-element": "^5.0.0",
+        "@github/mini-throttle": "^2.1.0",
+        "@github/relative-time-element": "^4.0.0",
+        "@github/tab-container-element": "^3.1.2",
+        "@primer/behaviors": "^1.2.0"
+      }
+    },
     "@sindresorhus/is": {
       "version": "0.14.0",
       "resolved": "https://registry.npmjs.org/@sindresorhus/is/-/is-0.14.0.tgz",
diff --git a/package.json b/package.json
index 1e2089be0bd0..2422fb8b4288 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "@github-docs/render-content": "^5.2.0",
     "@github/rest-api-operations": "^3.7.1",
     "@octokit/rest": "^16.38.1",
-    "@primer/css": "^15.1.0",
+    "@primer/css": "^20.8.3",
     "@primer/octicons": "^11.0.0",
     "algoliasearch": "^3.35.1",
     "babel-loader": "^8.1.0",