diff --git a/playground/package.json b/playground/package.json
index a2ead84..3bbe3b2 100644
--- a/playground/package.json
+++ b/playground/package.json
@@ -40,6 +40,7 @@
 		"monaco-editor-webpack-plugin": "^1.9.0",
 		"raw-loader": "^4.0.0",
 		"sass-loader": "^8.0.2",
+		"sass": "^1.25.0",
 		"style-loader": "^1.1.3",
 		"ts-loader": "^6.2.1",
 		"ts-node": "^8.6.2",
diff --git a/simple-demo/package.json b/simple-demo/package.json
index c5cec56..2d8a101 100644
--- a/simple-demo/package.json
+++ b/simple-demo/package.json
@@ -25,6 +25,7 @@
 		"monaco-editor-webpack-plugin": "^1.9.0",
 		"raw-loader": "^4.0.0",
 		"sass-loader": "^8.0.2",
+		"sass": "^1.25.0",
 		"style-loader": "^1.1.3",
 		"ts-loader": "^6.2.1",
 		"ts-node": "^8.6.2",
diff --git a/visualization-bundle/package.json b/visualization-bundle/package.json
index 5e0a0c0..81d582c 100644
--- a/visualization-bundle/package.json
+++ b/visualization-bundle/package.json
@@ -54,7 +54,6 @@
 		"@types/react": "^16.9.22",
 		"@types/react-dom": "^16.9.5",
 		"@types/line-column": "^1.0.0",
-		"sass": "^1.25.0",
 		"ts-loader": "^6.2.1",
 		"ts-node": "^8.6.2",
 		"typescript": "^3.9.7"