diff --git a/package-lock.json b/package-lock.json
index ae2da35..7cfbaec 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,9 +19,9 @@
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@@ -34,6 +34,27 @@
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@@ -42,6 +63,12 @@
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@@ -63,27 +90,145 @@
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@@ -94,6 +239,12 @@
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@@ -110,15 +261,89 @@
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@@ -142,37 +396,264 @@
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+        "vscode-languageserver-types": "^3.7.2"
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+      "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==",
+      "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==",
+      "dev": true
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     "wrappy": {
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       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
@@ -180,12 +661,24 @@
       "dev": true
     },
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-      "resolved": "https://registry.npmjs.org/ws/-/ws-6.1.0.tgz",
-      "integrity": "sha512-H3dGVdGvW2H8bnYpIDc3u3LH8Wue3Qh+Zto6aXXFzvESkTVT6rAfKR6tR/+coaUvxs8yHtmNV0uioBF62ZGSTg==",
+      "version": "6.2.1",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-6.2.1.tgz",
+      "integrity": "sha512-GIyAXC2cB7LjvpgMt9EKS2ldqr0MTrORaleiOno6TweZ6r3TKtoFQWay/2PceJ3RuBasOHzXNn5Lrw1X0bEjqA==",
       "requires": {
         "async-limiter": "~1.0.0"
       }
+    },
+    "xorshift": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/xorshift/-/xorshift-0.2.1.tgz",
+      "integrity": "sha1-/NgiZ+k1HBPw+5xzMH8lMx0pxjo=",
+      "dev": true
+    },
+    "xtend": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
+      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
+      "dev": true
     }
   }
 }
diff --git a/package.json b/package.json
index 6e3d643..699f0fb 100644
--- a/package.json
+++ b/package.json
@@ -21,15 +21,18 @@
   },
   "dependencies": {
     "@sourcegraph/vscode-ws-jsonrpc": "0.0.3-fork",
-    "js-yaml": "^3.12.0",
+    "js-yaml": "^3.13.1",
     "minimist": "^1.2.0",
-    "ws": "^6.1.0"
+    "ws": "^6.2.1"
   },
   "devDependencies": {
-    "@types/node": "^10.12.3",
+    "@types/node": "^10.14.8",
     "@types/ws": "^6.0.1",
-    "rimraf": "^2.6.2",
-    "typescript": "^3.0.1"
+    "javascript-typescript-langserver": "^2.11.3",
+    "rimraf": "^2.6.3",
+    "typescript": "^3.5.1",
+    "vscode-css-languageserver-bin": "^1.4.0",
+    "vscode-html-languageserver-bin": "^1.4.0"
   },
   "license": "ISC"
 }