diff --git a/package.json b/package.json
index 4e83453..3c5fbc7 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "prettier": "^2.3.0",
     "qunit": "^2.15.0",
     "qunit-dom": "^1.6.0",
-    "sass": "^1.32.13",
+    "sass": "^1.56.1",
     "tracerbench": "^6.0.0"
   },
   "engines": {
diff --git a/yarn.lock b/yarn.lock
index 06b31f3..a81008c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7582,6 +7582,11 @@ ignore@^5.1.1, ignore@^5.1.4:
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-5.1.8.tgz#f150a8b50a34289b33e22f5889abd4d8016f0e57"
   integrity sha512-BMpfD7PpiETpBl/A6S498BaIJ6Y/ABT93ETbby2fP00v4EbvPBXWEoaR1UBPKs3iR53pJY7EtZk5KACI57i1Uw==
 
+immutable@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/immutable/-/immutable-4.1.0.tgz#f795787f0db780183307b9eb2091fcac1f6fafef"
+  integrity sha512-oNkuqVTA8jqG1Q6c+UglTOD1xhC1BtjKI7XkCXRkZHrN5m18/XsnUp8Q89GkQO/z+0WjonSvl0FLhDYftp46nQ==
+
 import-fresh@^3.0.0, import-fresh@^3.2.1:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/import-fresh/-/import-fresh-3.3.0.tgz#37162c25fcb9ebaa2e6e53d5b4d88ce17d9e0c2b"
@@ -10639,12 +10644,14 @@ sane@^4.0.0, sane@^4.1.0:
     minimist "^1.1.1"
     walker "~1.0.5"
 
-sass@^1.32.13:
-  version "1.32.13"
-  resolved "https://registry.yarnpkg.com/sass/-/sass-1.32.13.tgz#8d29c849e625a415bce71609c7cf95e15f74ed00"
-  integrity sha512-dEgI9nShraqP7cXQH+lEXVf73WOPCse0QlFzSD8k+1TcOxCMwVXfQlr0jtoluZysQOyJGnfr21dLvYKDJq8HkA==
+sass@^1.56.1:
+  version "1.56.1"
+  resolved "https://registry.yarnpkg.com/sass/-/sass-1.56.1.tgz#94d3910cd468fd075fa87f5bb17437a0b617d8a7"
+  integrity sha512-VpEyKpyBPCxE7qGDtOcdJ6fFbcpOM+Emu7uZLxVrkX8KVU/Dp5UF7WLvzqRuUhB6mqqQt1xffLoG+AndxTZrCQ==
   dependencies:
     chokidar ">=3.0.0 <4.0.0"
+    immutable "^4.0.0"
+    source-map-js ">=0.6.2 <2.0.0"
 
 saxes@^5.0.1:
   version "5.0.1"
@@ -10979,6 +10986,11 @@ source-list-map@^2.0.0:
   resolved "https://registry.yarnpkg.com/source-list-map/-/source-list-map-2.0.1.tgz#3993bd873bfc48479cca9ea3a547835c7c154b34"
   integrity sha512-qnQ7gVMxGNxsiL4lEuJwe/To8UnK7fAnmbGEEH8RpLouuKbeEm0lhbQVFIrNSuB+G7tVrAlVsZgETT5nljf+Iw==
 
+"source-map-js@>=0.6.2 <2.0.0":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.0.2.tgz#adbc361d9c62df380125e7f161f71c826f1e490c"
+  integrity sha512-R0XvVJ9WusLiqTCEiGCmICCMplcCkIwwR11mOSD9CR5u+IXYdiseeEuXCVAjS54zqwkLcPNnmU4OeJ6tUrWhDw==
+
 source-map-resolve@^0.5.0:
   version "0.5.3"
   resolved "https://registry.yarnpkg.com/source-map-resolve/-/source-map-resolve-0.5.3.tgz#190866bece7553e1f8f267a2ee82c606b5509a1a"