diff --git a/package-lock.json b/package-lock.json
index a289a99f41d3..bb048b56c9c9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
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         "@hapi/accept": "^5.0.2",
         "@primer/components": "^28.0.4",
-        "@primer/css": "^16.2.0",
+        "@primer/css": "^16.3.0",
         "@primer/octicons": "^14.1.0",
         "@primer/octicons-react": "^14.1.0",
         "accept-language-parser": "^1.5.0",
@@ -3758,18 +3758,18 @@
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     },
     "node_modules/@primer/css": {
-      "version": "16.2.0",
-      "resolved": "https://registry.npmjs.org/@primer/css/-/css-16.2.0.tgz",
-      "integrity": "sha512-nELaaTJAuDBfyoHuz9c5P3ALDVavt/BSyAAa7KEpyi9S3BupYSitCwGkcJE+U6LtCUzHoqv31N9R2eJJxTgCyQ==",
+      "version": "16.3.0",
+      "resolved": "https://registry.npmjs.org/@primer/css/-/css-16.3.0.tgz",
+      "integrity": "sha512-nfgvRLPVGS1cdEh/Y1cak17gwEVI8HtQpbGQHvBcWrVQ78sbS3EHvdRUGpFM/Lyi/WKVZInAAwIXG9RWKukOag==",
       "dependencies": {
-        "@primer/octicons": "12.1.0",
-        "@primer/primitives": "4.2.0"
+        "@primer/octicons": "13.0.0",
+        "@primer/primitives": "4.2.1"
       }
     },
     "node_modules/@primer/css/node_modules/@primer/octicons": {
-      "version": "12.1.0",
-      "resolved": "https://registry.npmjs.org/@primer/octicons/-/octicons-12.1.0.tgz",
-      "integrity": "sha512-jayKLMTCx/0zh4fjYmkxdlEgQ8STwevn5S48fkvi/03asITmBkaYAMPrUgO8VNSQkSPHIEuc3oTLXgh+JwH0UQ==",
+      "version": "13.0.0",
+      "resolved": "https://registry.npmjs.org/@primer/octicons/-/octicons-13.0.0.tgz",
+      "integrity": "sha512-kMNu3Ny3eocOTl2hxRC0YX0na7zJwpSIQNiZqmyqbLMKp2YwNAwk5Tan4RLGe35f30st+EbNq15dEjiMzslAcw==",
       "dependencies": {
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       }
@@ -3791,9 +3791,9 @@
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     "node_modules/@primer/primitives": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/@primer/primitives/-/primitives-4.2.0.tgz",
-      "integrity": "sha512-/2/9ueCWWzqaLRSJ3TNGthMVX8DBn/oa+ZY9eB/TmxUPglXd8AQMxV2wz+pAoy8SpXXwe84JuEgHTAghzAOh0w=="
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/@primer/primitives/-/primitives-4.2.1.tgz",
+      "integrity": "sha512-sI0Bw/PMCZ1kfPX1MRwoNYD6RWdvU0sGk9YYD8euYASwrr4E6aNH9dutMmHTRVe/N3/coBN7QUkV79GMt0UKyQ=="
     },
     "node_modules/@sideway/address": {
       "version": "4.1.2",
@@ -27266,18 +27266,18 @@
       }
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     "@primer/css": {
-      "version": "16.2.0",
-      "resolved": "https://registry.npmjs.org/@primer/css/-/css-16.2.0.tgz",
-      "integrity": "sha512-nELaaTJAuDBfyoHuz9c5P3ALDVavt/BSyAAa7KEpyi9S3BupYSitCwGkcJE+U6LtCUzHoqv31N9R2eJJxTgCyQ==",
+      "version": "16.3.0",
+      "resolved": "https://registry.npmjs.org/@primer/css/-/css-16.3.0.tgz",
+      "integrity": "sha512-nfgvRLPVGS1cdEh/Y1cak17gwEVI8HtQpbGQHvBcWrVQ78sbS3EHvdRUGpFM/Lyi/WKVZInAAwIXG9RWKukOag==",
       "requires": {
-        "@primer/octicons": "12.1.0",
-        "@primer/primitives": "4.2.0"
+        "@primer/octicons": "13.0.0",
+        "@primer/primitives": "4.2.1"
       },
       "dependencies": {
         "@primer/octicons": {
-          "version": "12.1.0",
-          "resolved": "https://registry.npmjs.org/@primer/octicons/-/octicons-12.1.0.tgz",
-          "integrity": "sha512-jayKLMTCx/0zh4fjYmkxdlEgQ8STwevn5S48fkvi/03asITmBkaYAMPrUgO8VNSQkSPHIEuc3oTLXgh+JwH0UQ==",
+          "version": "13.0.0",
+          "resolved": "https://registry.npmjs.org/@primer/octicons/-/octicons-13.0.0.tgz",
+          "integrity": "sha512-kMNu3Ny3eocOTl2hxRC0YX0na7zJwpSIQNiZqmyqbLMKp2YwNAwk5Tan4RLGe35f30st+EbNq15dEjiMzslAcw==",
           "requires": {
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           }
@@ -27298,9 +27298,9 @@
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     },
     "@primer/primitives": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/@primer/primitives/-/primitives-4.2.0.tgz",
-      "integrity": "sha512-/2/9ueCWWzqaLRSJ3TNGthMVX8DBn/oa+ZY9eB/TmxUPglXd8AQMxV2wz+pAoy8SpXXwe84JuEgHTAghzAOh0w=="
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/@primer/primitives/-/primitives-4.2.1.tgz",
+      "integrity": "sha512-sI0Bw/PMCZ1kfPX1MRwoNYD6RWdvU0sGk9YYD8euYASwrr4E6aNH9dutMmHTRVe/N3/coBN7QUkV79GMt0UKyQ=="
     },
     "@sideway/address": {
       "version": "4.1.2",
diff --git a/package.json b/package.json
index 36f33fc496a7..638f512c5209 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   "dependencies": {
     "@hapi/accept": "^5.0.2",
     "@primer/components": "^28.0.4",
-    "@primer/css": "^16.2.0",
+    "@primer/css": "^16.3.0",
     "@primer/octicons": "^14.1.0",
     "@primer/octicons-react": "^14.1.0",
     "accept-language-parser": "^1.5.0",