diff --git a/package-lock.json b/package-lock.json
index 95ecebd..1d6b72a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -177,9 +177,20 @@
       "dev": true
     },
     "@primer/css": {
-      "version": "12.3.1",
-      "resolved": "https://registry.npmjs.org/@primer/css/-/css-12.3.1.tgz",
-      "integrity": "sha512-W9khweOSS0VwjGcw/p9t2L4N+uzMHpelsp/lihgQ+g2An54IYuTEUX3RT42Wp++3DQTPGapEMmXFnLI9cTBL4w=="
+      "version": "12.6.0",
+      "resolved": "https://registry.npmjs.org/@primer/css/-/css-12.6.0.tgz",
+      "integrity": "sha512-GzQr/MPCbTlgvAd4bEXy4RA5cZvz7k/wkCzG7sOmjB9g9EtGnkzmLz6aS58EBRJsxfe6QU/iZ2/N/66/Bn5eZA==",
+      "requires": {
+        "@primer/octicons": "9.1.1"
+      }
+    },
+    "@primer/octicons": {
+      "version": "9.1.1",
+      "resolved": "https://registry.npmjs.org/@primer/octicons/-/octicons-9.1.1.tgz",
+      "integrity": "sha512-7EGM0+Kx39bIgaYr9bTCzFvBCxm+fqh/YJIoSns8zfCwss32ZJ2GDP3024UH709VQtM5cKFU4JcIYPHyGdSfIg==",
+      "requires": {
+        "object-assign": "^4.1.1"
+      }
     },
     "@types/events": {
       "version": "3.0.0",
@@ -2903,8 +2914,7 @@
     "object-assign": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
-      "integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=",
-      "dev": true
+      "integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM="
     },
     "object-copy": {
       "version": "0.1.0",
diff --git a/package.json b/package.json
index db7b2a7..06d91f5 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "stylelint-selector-no-utility": "^4.0.0"
   },
   "dependencies": {
-    "@primer/css": "^12.3.1"
+    "@primer/css": "^12.6.0"
   },
   "scripts": {
     "test": "stylelint '**/*.scss'"