diff --git a/package-lock.json b/package-lock.json
index 33bc234..b9ebdc8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,9 +17,15 @@
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         "sass": "1.78.0",
-        "sass-true": "6.1.0"
+        "sass-true": "8.1.0"
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+    "node_modules/@adobe/css-tools": {
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+      "resolved": "https://registry.npmjs.org/@adobe/css-tools/-/css-tools-4.4.0.tgz",
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+      "dev": true
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@@ -48,10 +54,22 @@
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+    "node_modules/@jest/schemas": {
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+      "resolved": "https://registry.npmjs.org/@jest/schemas/-/schemas-29.6.3.tgz",
+      "integrity": "sha512-mo5j5X+jIZmJQveBKeS/clAueipV7KgiX1vMgCxam1RNYiqE1w62n0/tJJnHtjW8ZHcQco5gY85jA3mi0L+nSA==",
+      "dev": true,
+      "dependencies": {
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+      },
+      "engines": {
+        "node": "^14.15.0 || ^16.10.0 || >=18.0.0"
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+    "node_modules/@sinclair/typebox": {
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+      "resolved": "https://registry.npmjs.org/@sinclair/typebox/-/typebox-0.27.8.tgz",
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@@ -371,23 +377,6 @@
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@@ -875,27 +855,27 @@
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@@ -1348,17 +1328,17 @@
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@@ -1516,9 +1496,9 @@
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+      "version": "8.1.0",
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-        "@types/css": "^0.0.33",
-        "css": "^3.0.0",
-        "jest-diff": "^27.5.1",
+        "@adobe/css-tools": "^4.4.0",
+        "jest-diff": "^29.7.0",
         "lodash": "^4.17.21"
       },
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-        "node": ">=10"
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "sass": ">=1.45.0",
+        "sass-embedded": ">=1.45.0"
+      },
+      "peerDependenciesMeta": {
+        "sass": {
+          "optional": true
+        },
+        "sass-embedded": {
+          "optional": true
+        }
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@@ -1625,15 +1616,6 @@
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@@ -1887,6 +1859,12 @@
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@@ -1909,10 +1887,19 @@
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+      "resolved": "https://registry.npmjs.org/@jest/schemas/-/schemas-29.6.3.tgz",
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+      "dev": true,
+      "requires": {
+        "@sinclair/typebox": "^0.27.8"
+      }
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+      "version": "0.27.8",
+      "resolved": "https://registry.npmjs.org/@sinclair/typebox/-/typebox-0.27.8.tgz",
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@@ -2897,14 +2853,14 @@
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@@ -3058,9 +3014,9 @@
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-      "resolved": "https://registry.npmjs.org/react-is/-/react-is-17.0.2.tgz",
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+      "resolved": "https://registry.npmjs.org/react-is/-/react-is-18.3.1.tgz",
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@@ -3106,14 +3062,13 @@
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-      "version": "6.1.0",
-      "resolved": "https://registry.npmjs.org/sass-true/-/sass-true-6.1.0.tgz",
-      "integrity": "sha512-Qt6TpPe8Ogr8g9FvBSwXvzfrkbtHD7rej0X3lzyoiZ+I0kKV9NFeefcF560uMn5NFCA7g5rcVKxc9UHrrMcDrw==",
+      "version": "8.1.0",
+      "resolved": "https://registry.npmjs.org/sass-true/-/sass-true-8.1.0.tgz",
+      "integrity": "sha512-LUiNRslsNreGk8Oe85ZvMmV0mlIh3LFP2KTDMZsSHz5DxPElCy7wI9ocJzf8IpIf7Q5ZO0w+hDBF1nbdUcmZHA==",
       "dev": true,
       "requires": {
-        "@types/css": "^0.0.33",
-        "css": "^3.0.0",
-        "jest-diff": "^27.5.1",
+        "@adobe/css-tools": "^4.4.0",
+        "jest-diff": "^29.7.0",
         "lodash": "^4.17.21"
       }
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@@ -3132,28 +3087,12 @@
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-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
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-      "dev": true
-    },
     "source-map-js": {
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-    "source-map-resolve": {
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-      "resolved": "https://registry.npmjs.org/source-map-resolve/-/source-map-resolve-0.6.0.tgz",
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-      "dev": true,
-      "requires": {
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diff --git a/package.json b/package.json
index 1304054..774ef57 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "mocha": "9.2.2",
     "pug": "3.0.3",
     "sass": "1.78.0",
-    "sass-true": "6.1.0"
+    "sass-true": "8.1.0"
   },
   "dependencies": {
     "include-media": "^1.4.9"