diff --git a/.changeset/olive-forks-breathe.md b/.changeset/olive-forks-breathe.md
new file mode 100644
index 0000000000..2189744c46
--- /dev/null
+++ b/.changeset/olive-forks-breathe.md
@@ -0,0 +1,5 @@
+---
+"@primer/css": patch
+---
+
+Bump @primer/primitives version
diff --git a/package.json b/package.json
index 10f094209e..e73a5a9af3 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "release": "changeset publish"
   },
   "dependencies": {
-    "@primer/primitives": "4.3.2"
+    "@primer/primitives": "4.3.3"
   },
   "devDependencies": {
     "@changesets/changelog-github": "0.4.0",
diff --git a/src/base/modes-v2.scss b/src/base/modes-v2.scss
index 704f70ee0b..6c80ea4d51 100644
--- a/src/base/modes-v2.scss
+++ b/src/base/modes-v2.scss
@@ -5,6 +5,7 @@
 @import '@primer/primitives/dist/scss/colors_v2/_light.scss';
 @import '@primer/primitives/dist/scss/colors_v2/_dark.scss';
 @import '@primer/primitives/dist/scss/colors_v2/_dark_dimmed.scss';
+@import '@primer/primitives/dist/scss/colors_v2/_dark_high_contrast.scss';
 
 // Outputs the CSS variables
 // Use :root (html element) to define a default
@@ -20,3 +21,7 @@
 @include color-mode-theme(dark_dimmed) {
   @include primer-colors_v2-dark_dimmed;
 }
+
+@include color-mode-theme(dark_high_contrast) {
+  @include primer-colors_v2-dark_high_contrast;
+}
diff --git a/yarn.lock b/yarn.lock
index 602cf15efa..b65d765532 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -760,10 +760,10 @@
     "@nodelib/fs.scandir" "2.1.4"
     fastq "^1.6.0"
 
-"@primer/primitives@4.3.2":
-  version "4.3.2"
-  resolved "https://registry.yarnpkg.com/@primer/primitives/-/primitives-4.3.2.tgz#687883aa6955de33d1e8ca15154509179222f72b"
-  integrity sha512-5qBEQVchd2Vd2K2IT9mbQdI9E4IGiDVoLITlQXE2HIW9sWHREULSE4xg3W51i/XlDUIgnycELCI+Ept8V7v+og==
+"@primer/primitives@4.3.3":
+  version "4.3.3"
+  resolved "https://registry.yarnpkg.com/@primer/primitives/-/primitives-4.3.3.tgz#9cbeffd76f27c98e2dda33eb9a5a9b1a1d674dbe"
+  integrity sha512-S2VvxGQBnKhggTqY6hQSNf/nyH4KR0mJp3H2/bWTKR/RM7ptCo+ajxgxmW16WaDTIQ2cvrHeqTD/qnuZ8yf6bg==
 
 "@sinonjs/commons@^1.7.0":
   version "1.8.2"