diff --git a/package-lock.json b/package-lock.json
index a27c09739ba9e4cbf144b5b8e56f385d1390a1fe..c1a9eb2dee9f54ccb171b6a0a9471c03bb261ab3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -177,9 +177,9 @@
       "dev": true
     },
     "@primer/css": {
-      "version": "12.2.3",
-      "resolved": "https://registry.npmjs.org/@primer/css/-/css-12.2.3.tgz",
-      "integrity": "sha512-IhQHkxYiHBt0erXoPADWqgjcnM73NVK3I9tJX112JofwErhWsrJZbtvlpgIQ9WXDEsq74FEh1umSMQm5QuhYug=="
+      "version": "12.3.1",
+      "resolved": "https://registry.npmjs.org/@primer/css/-/css-12.3.1.tgz",
+      "integrity": "sha512-W9khweOSS0VwjGcw/p9t2L4N+uzMHpelsp/lihgQ+g2An54IYuTEUX3RT42Wp++3DQTPGapEMmXFnLI9cTBL4w=="
     },
     "@types/events": {
       "version": "3.0.0",
@@ -787,7 +787,7 @@
         },
         "chalk": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
@@ -856,7 +856,7 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
@@ -871,7 +871,7 @@
         },
         "yargs": {
           "version": "1.3.3",
-          "resolved": "http://registry.npmjs.org/yargs/-/yargs-1.3.3.tgz",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-1.3.3.tgz",
           "integrity": "sha1-BU3oth8i7v23IHBZ6u+da4P7kxo=",
           "dev": true
         }
@@ -961,7 +961,7 @@
         },
         "readable-stream": {
           "version": "1.0.34",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
           "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
           "dev": true,
           "requires": {
@@ -973,13 +973,13 @@
         },
         "string_decoder": {
           "version": "0.10.31",
-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
           "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
           "dev": true
         },
         "through2": {
           "version": "0.6.5",
-          "resolved": "http://registry.npmjs.org/through2/-/through2-0.6.5.tgz",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-0.6.5.tgz",
           "integrity": "sha1-QaucZ7KdVyCQcUEOHXp6lozTrUg=",
           "dev": true,
           "requires": {
@@ -1007,7 +1007,7 @@
         },
         "readable-stream": {
           "version": "1.1.14",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
           "integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk=",
           "dev": true,
           "requires": {
@@ -1019,7 +1019,7 @@
         },
         "string_decoder": {
           "version": "0.10.31",
-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
           "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
           "dev": true
         }
@@ -1223,7 +1223,7 @@
         },
         "readable-stream": {
           "version": "1.1.14",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
           "integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk=",
           "dev": true,
           "requires": {
@@ -1235,7 +1235,7 @@
         },
         "string_decoder": {
           "version": "0.10.31",
-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
           "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
           "dev": true
         }
@@ -2371,7 +2371,7 @@
         },
         "readable-stream": {
           "version": "1.0.34",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
           "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
           "dev": true,
           "requires": {
@@ -2383,13 +2383,13 @@
         },
         "string_decoder": {
           "version": "0.10.31",
-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
           "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
           "dev": true
         },
         "through2": {
           "version": "0.6.5",
-          "resolved": "http://registry.npmjs.org/through2/-/through2-0.6.5.tgz",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-0.6.5.tgz",
           "integrity": "sha1-QaucZ7KdVyCQcUEOHXp6lozTrUg=",
           "dev": true,
           "requires": {
@@ -2444,7 +2444,7 @@
         },
         "readable-stream": {
           "version": "1.0.34",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
           "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
           "dev": true,
           "requires": {
@@ -2456,13 +2456,13 @@
         },
         "string_decoder": {
           "version": "0.10.31",
-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
           "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
           "dev": true
         },
         "through2": {
           "version": "0.6.5",
-          "resolved": "http://registry.npmjs.org/through2/-/through2-0.6.5.tgz",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-0.6.5.tgz",
           "integrity": "sha1-QaucZ7KdVyCQcUEOHXp6lozTrUg=",
           "dev": true,
           "requires": {
@@ -3857,7 +3857,7 @@
         },
         "readable-stream": {
           "version": "1.0.34",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
           "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
           "dev": true,
           "requires": {
@@ -3869,13 +3869,13 @@
         },
         "string_decoder": {
           "version": "0.10.31",
-          "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
           "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
           "dev": true
         },
         "through2": {
           "version": "0.6.5",
-          "resolved": "http://registry.npmjs.org/through2/-/through2-0.6.5.tgz",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-0.6.5.tgz",
           "integrity": "sha1-QaucZ7KdVyCQcUEOHXp6lozTrUg=",
           "dev": true,
           "requires": {
@@ -4036,7 +4036,7 @@
         },
         "chalk": {
           "version": "1.1.3",
-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
@@ -4122,7 +4122,7 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
@@ -4360,7 +4360,7 @@
         },
         "camelcase-keys": {
           "version": "2.1.0",
-          "resolved": "http://registry.npmjs.org/camelcase-keys/-/camelcase-keys-2.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/camelcase-keys/-/camelcase-keys-2.1.0.tgz",
           "integrity": "sha1-MIvur/3ygRkFHvodkyITyRuPkuc=",
           "dev": true,
           "requires": {
@@ -4438,7 +4438,7 @@
           "dependencies": {
             "source-map": {
               "version": "0.4.4",
-              "resolved": "http://registry.npmjs.org/source-map/-/source-map-0.4.4.tgz",
+              "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.4.4.tgz",
               "integrity": "sha1-66T12pwNyZneaAMti092FzZSA2s=",
               "dev": true,
               "requires": {
@@ -4505,7 +4505,7 @@
         },
         "globby": {
           "version": "6.1.0",
-          "resolved": "http://registry.npmjs.org/globby/-/globby-6.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/globby/-/globby-6.1.0.tgz",
           "integrity": "sha1-9abXDoOV4hyFj7BInWTfAkJNUGw=",
           "dev": true,
           "requires": {
@@ -4599,7 +4599,7 @@
         },
         "load-json-file": {
           "version": "1.1.0",
-          "resolved": "http://registry.npmjs.org/load-json-file/-/load-json-file-1.1.0.tgz",
+          "resolved": "https://registry.npmjs.org/load-json-file/-/load-json-file-1.1.0.tgz",
           "integrity": "sha1-lWkFcI1YtLq0wiYbBPWfMcmTdMA=",
           "dev": true,
           "requires": {
@@ -4621,7 +4621,7 @@
           "dependencies": {
             "chalk": {
               "version": "1.1.3",
-              "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+              "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
               "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
               "dev": true,
               "requires": {
@@ -4648,7 +4648,7 @@
         },
         "meow": {
           "version": "3.7.0",
-          "resolved": "http://registry.npmjs.org/meow/-/meow-3.7.0.tgz",
+          "resolved": "https://registry.npmjs.org/meow/-/meow-3.7.0.tgz",
           "integrity": "sha1-cstmi0JSKCkKu/qFaJJYcwioAfs=",
           "dev": true,
           "requires": {
@@ -4737,7 +4737,7 @@
         },
         "pify": {
           "version": "2.3.0",
-          "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
           "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw=",
           "dev": true
         },
@@ -4755,7 +4755,7 @@
           "dependencies": {
             "chalk": {
               "version": "1.1.3",
-              "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+              "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
               "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
               "dev": true,
               "requires": {
@@ -4778,7 +4778,7 @@
         },
         "postcss-less": {
           "version": "0.14.0",
-          "resolved": "http://registry.npmjs.org/postcss-less/-/postcss-less-0.14.0.tgz",
+          "resolved": "https://registry.npmjs.org/postcss-less/-/postcss-less-0.14.0.tgz",
           "integrity": "sha1-xjGwicbM5CK5oQ86lY0r7dOBkyQ=",
           "dev": true,
           "requires": {
@@ -4799,7 +4799,7 @@
           "dependencies": {
             "chalk": {
               "version": "1.1.3",
-              "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+              "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
               "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
               "dev": true,
               "requires": {
@@ -4957,7 +4957,7 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
@@ -5057,7 +5057,7 @@
         },
         "table": {
           "version": "4.0.3",
-          "resolved": "http://registry.npmjs.org/table/-/table-4.0.3.tgz",
+          "resolved": "https://registry.npmjs.org/table/-/table-4.0.3.tgz",
           "integrity": "sha512-S7rnFITmBH1EnyKcvxBh1LjYeQMmnZtCXSEbHcH6S0NoKit24ZuFO/T1vDcLdYsLQkM188PVVhQmzKIuThNkKg==",
           "dev": true,
           "requires": {
@@ -5102,7 +5102,7 @@
         },
         "yargs": {
           "version": "3.32.0",
-          "resolved": "http://registry.npmjs.org/yargs/-/yargs-3.32.0.tgz",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.32.0.tgz",
           "integrity": "sha1-AwiOnr+edWtpdRYR0qXvWRSCyZU=",
           "dev": true,
           "requires": {
@@ -5612,7 +5612,7 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
diff --git a/package.json b/package.json
index c40c55152090a5cf2072fc793a62b476da778cab..555cbb8d7f5eb973d5f6eea06308c4476defb7a6 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "stylelint-selector-no-utility": "^4.0.0"
   },
   "dependencies": {
-    "@primer/css": "^12.2.3"
+    "@primer/css": "^12.3.1"
   },
   "scripts": {
     "test": "stylelint '**/*.scss'"