diff --git a/.changeset/four-trainers-pay.md b/.changeset/four-trainers-pay.md
new file mode 100644
index 000000000..06b5bab6c
--- /dev/null
+++ b/.changeset/four-trainers-pay.md
@@ -0,0 +1,5 @@
+---
+'@primer/primitives': minor
+---
+
+Use Mona Sans and Monaspace instead of current fonts
diff --git a/src/tokens/functional/typography/typography.json5 b/src/tokens/functional/typography/typography.json5
index bf7a9c038..387c9adaa 100644
--- a/src/tokens/functional/typography/typography.json5
+++ b/src/tokens/functional/typography/typography.json5
@@ -11,7 +11,7 @@
       },
     },
     sansSerif: {
-      $value: "-apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji'",
+      $value: "'Mona Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji'",
       $type: 'fontFamily',
       $extensions: {
         'org.primer.figma': {
@@ -21,7 +21,7 @@
       },
     },
     sansSerifDisplay: {
-      $value: "-apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji'",
+      $value: "'Mona Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji'",
       $type: 'fontFamily',
       $extensions: {
         'org.primer.figma': {
@@ -31,7 +31,7 @@
       },
     },
     monospace: {
-      $value: 'ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace',
+      $value: "'Monaspace Neon', 'ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace'",
       $type: 'fontFamily',
       $extensions: {
         'org.primer.figma': {