diff --git a/addons/xterm-addon-canvas/src/tsconfig.json b/addons/xterm-addon-canvas/src/tsconfig.json
index 1ce2a5e3..d954ec49 100644
--- a/addons/xterm-addon-canvas/src/tsconfig.json
+++ b/addons/xterm-addon-canvas/src/tsconfig.json
@@ -4,8 +4,7 @@
     "target": "es5",
     "lib": [
       "dom",
-      "es6",
-      "ES2017.Object"
+      "es6"
     ],
     "rootDir": ".",
     "outDir": "../out",
diff --git a/addons/xterm-addon-webgl/src/tsconfig.json b/addons/xterm-addon-webgl/src/tsconfig.json
index b111ae55..206d52ae 100644
--- a/addons/xterm-addon-webgl/src/tsconfig.json
+++ b/addons/xterm-addon-webgl/src/tsconfig.json
@@ -4,9 +4,7 @@
     "target": "es5",
     "lib": [
       "dom",
-      "es6",
-      "es2016.Array.Include",
-      "ES2017.Object"
+      "es6"
     ],
     "rootDir": ".",
     "outDir": "../out",