diff --git a/package-lock.json b/package-lock.json
index 4ba2e53e..9579c87e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,15 +11,15 @@
       "dev": true
     },
     "monaco-editor-core": {
-      "version": "0.17.0",
-      "resolved": "https://registry.npmjs.org/monaco-editor-core/-/monaco-editor-core-0.17.0.tgz",
-      "integrity": "sha512-8q7b0itiX4UDv6e2F/EJc53G0iLL7P905IZsemu/bXffS7mIcjKKtX+TlzT13YbkuGFC/86Q32ANXERaJTM+mw==",
+      "version": "0.18.1",
+      "resolved": "https://registry.npmjs.org/monaco-editor-core/-/monaco-editor-core-0.18.1.tgz",
+      "integrity": "sha512-euzXzmwjZFG0oAPGjICMwINcZBzQDyfGDYlAR5YNMBJZO9Bmkqq1xpTTze/qQ0KKbVmawFXiwgUbg7WVgebP9Q==",
       "dev": true
     },
     "monaco-languages": {
-      "version": "1.7.0",
-      "resolved": "https://registry.npmjs.org/monaco-languages/-/monaco-languages-1.7.0.tgz",
-      "integrity": "sha512-2YrYlkCF/g2H0PDt/ERax2IStaihZ17v1JkYnj2xEALYNah0pbQvGH9gXJvdVx0EpBoSRmxVnrwwM2oBWWOjSQ==",
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/monaco-languages/-/monaco-languages-1.8.0.tgz",
+      "integrity": "sha512-vC/lqNgSslQT3vSlNOpyT34ELK0eoNbA/rHUvTUjQemIiR1GpRMKhuwB21BqzWk+0MjZuJydGSCQMCebBge7jg==",
       "dev": true
     },
     "monaco-plugin-helpers": {
@@ -52,9 +52,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.3.3333",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.3.3333.tgz",
-      "integrity": "sha512-JjSKsAfuHBE/fB2oZ8NxtRTk5iGcg6hkYXMnZ3Wc+b2RSqejEqTaem11mHASMnFilHrax3sLK0GDzcJrekZYLw==",
+      "version": "3.6.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.6.3.tgz",
+      "integrity": "sha512-N7bceJL1CtRQ2RiG0AQME13ksR7DiuQh/QehubYcghzv20tnh+MQnQIuJddTmsbqYj+dztchykemz0zFzlvdQw==",
       "dev": true
     },
     "uglify-js": {
@@ -85,15 +85,15 @@
       "dev": true
     },
     "vscode-nls": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/vscode-nls/-/vscode-nls-4.0.0.tgz",
-      "integrity": "sha512-qCfdzcH+0LgQnBpZA53bA32kzp9rpq/f66Som577ObeuDlFIrtbEJ+A/+CCxjIh4G8dpJYNCKIsxpRAHIfsbNw==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/vscode-nls/-/vscode-nls-4.1.1.tgz",
+      "integrity": "sha512-4R+2UoUUU/LdnMnFjePxfLqNhBS8lrAFyX7pjb2ud/lqDkrUavFUTcG7wR0HBZFakae0Q6KLBFjMS6W93F403A==",
       "dev": true
     },
     "vscode-uri": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/vscode-uri/-/vscode-uri-1.0.6.tgz",
-      "integrity": "sha512-sLI2L0uGov3wKVb9EB+vIQBl9tVP90nqRvxSoJ35vI3NjxE8jfsE5DSOhWgSunHSZmKS4OCi2jrtfxK7uyp2ww==",
+      "version": "1.0.8",
+      "resolved": "https://registry.npmjs.org/vscode-uri/-/vscode-uri-1.0.8.tgz",
+      "integrity": "sha512-obtSWTlbJ+a+TFRYGaUumtVwb+InIUVI0Lu0VBUAPmj2cU5JutEXg3xUE0c2J5Tcy7h2DEKVJBFi+Y9ZSFzzPQ==",
       "dev": true
     }
   }
diff --git a/package.json b/package.json
index 5ab21f5a..05275577 100644
--- a/package.json
+++ b/package.json
@@ -19,8 +19,8 @@
     "url": "https://github.com/Microsoft/monaco-editor/issues"
   },
   "devDependencies": {
-    "monaco-editor-core": "^0.17.0",
-    "monaco-languages": "^1.7.0",
+    "monaco-editor-core": "0.18.1",
+    "monaco-languages": "^1.8.0",
     "monaco-plugin-helpers": "^1.0.2",
     "requirejs": "^2.3.6",
     "typescript": "^3.3.3333",
diff --git a/src/languageFeatures.ts b/src/languageFeatures.ts
index 0ab6a0e2..1b5654ce 100644
--- a/src/languageFeatures.ts
+++ b/src/languageFeatures.ts
@@ -402,6 +402,7 @@ export class DocumentSymbolAdapter implements monaco.languages.DocumentSymbolPro
 				detail: '',
 				containerName: item.containerName,
 				kind: toSymbolKind(item.kind),
+				tags: [],
 				range: toRange(item.location.range),
 				selectionRange: toRange(item.location.range)
 			}));
diff --git a/src/tsconfig.esm.json b/src/tsconfig.esm.json
index a84f69ca..3ed15475 100644
--- a/src/tsconfig.esm.json
+++ b/src/tsconfig.esm.json
@@ -8,7 +8,8 @@
       "dom",
       "es5",
       "es2015.collection",
-      "es2015.promise"
+      "es2015.promise",
+      "es2015.iterable"
     ]
   }
-}
\ No newline at end of file
+}
diff --git a/src/tsconfig.json b/src/tsconfig.json
index 294f4a3b..99eb3ed5 100644
--- a/src/tsconfig.json
+++ b/src/tsconfig.json
@@ -8,7 +8,8 @@
       "dom",
       "es5",
       "es2015.collection",
-      "es2015.promise"
+      "es2015.promise",
+      "es2015.iterable"
     ]
   }
-}
\ No newline at end of file
+}