diff --git a/scripts/package-extension.js b/scripts/package-extension.js
index f193c00..4de3650 100644
--- a/scripts/package-extension.js
+++ b/scripts/package-extension.js
@@ -200,6 +200,10 @@ async function packageExtension({
             'url("fonts/',
             'url("chrome-extension://__MSG_@@extension_id__/fonts/'
           )
+          .replaceAll(
+            "unicode-range: U+2C00-2C5F;",
+            "unicode-range: U+0301, U+2C00-2C5F;"
+          )
       );
     }
 
diff --git a/tests/package-extension.test.js b/tests/package-extension.test.js
index f1c37ac..56488af 100644
--- a/tests/package-extension.test.js
+++ b/tests/package-extension.test.js
@@ -146,6 +146,10 @@ test("builds a Chromium MV3 ZIP with Chromium manifest fields and raster icons",
       true
     );
   }
+  assert.deepEqual(
+    [...contentCss.matchAll(/unicode-range: ([^;]+);/g)].map((match) => match[1]),
+    Array(4).fill("U+0301, U+2C00-2C5F")
+  );
 
   for (const relativePath of CHROMIUM_ARCHIVE_FILES.filter((name) =>
     name.endsWith(".png")