diff --git a/package-lock.json b/package-lock.json
index 3fc74f73..31d8390e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -219,9 +219,9 @@
 			}
 		},
 		"monaco-editor-core": {
-			"version": "0.25.0",
-			"resolved": "https://registry.npmjs.org/monaco-editor-core/-/monaco-editor-core-0.25.0.tgz",
-			"integrity": "sha512-PcaM+wCw2UggfECbBd/v5LDX5JtG/NS/9VAVYZj+azI2geoy6ohEpISPTJYiWRhk9yu8LxPDG6/NJXguzG2Bxg==",
+			"version": "0.26.0",
+			"resolved": "https://registry.npmjs.org/monaco-editor-core/-/monaco-editor-core-0.26.0.tgz",
+			"integrity": "sha512-qtZQdVUk2HeE2IMBTfBV+UNT1vNWEJ2nenfsi9pQSN/HWrUNAcpsVtaPjklUwjxw/QfuziG+h/QkL1L91S8tfg==",
 			"dev": true
 		},
 		"monaco-languages": {
@@ -443,9 +443,9 @@
 			"dev": true
 		},
 		"vscode-css-languageservice": {
-			"version": "5.1.3",
-			"resolved": "https://registry.npmjs.org/vscode-css-languageservice/-/vscode-css-languageservice-5.1.3.tgz",
-			"integrity": "sha512-c8xiUhrDBNG6iS92FEE+K3IWOHAqVvzsqjjLSaXHyF5Qdn/6VhUweGNjtZ2CBSfs+Vkmz7pJzLQ7Io1x5deumA==",
+			"version": "5.1.4",
+			"resolved": "https://registry.npmjs.org/vscode-css-languageservice/-/vscode-css-languageservice-5.1.4.tgz",
+			"integrity": "sha512-fIJZJMXbaBsK0ifBb2RmSiLtzwn6NrZnKn7O+0ziIjwAY+rPvSK9St2qqQXFU3reZVRAt/I4GBp40dC/THcUDA==",
 			"dev": true,
 			"requires": {
 				"vscode-languageserver-textdocument": "^1.0.1",
diff --git a/package.json b/package.json
index 6e6a5761..b92a2fe1 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
 	"typings": "./release/esm/monaco.contribution.d.ts",
 	"devDependencies": {
 		"husky": "^5.1.3",
-		"monaco-editor-core": "0.25.0",
+		"monaco-editor-core": "0.26.0",
 		"monaco-languages": "2.4.0",
 		"monaco-plugin-helpers": "^1.0.3",
 		"prettier": "^2.2.1",