diff --git a/packages/angular_devkit/build_optimizer/package.json b/packages/angular_devkit/build_optimizer/package.json
index 359a50a74f8d..a708cad42744 100644
--- a/packages/angular_devkit/build_optimizer/package.json
+++ b/packages/angular_devkit/build_optimizer/package.json
@@ -11,7 +11,7 @@
   "dependencies": {
     "loader-utils": "2.0.0",
     "source-map": "0.7.3",
-    "tslib": "2.0.1",
+    "tslib": "2.0.2",
     "typescript": "4.0.3",
     "webpack-sources": "2.0.1"
   }
diff --git a/yarn.lock b/yarn.lock
index 16cdf419fce2..76d6b39dfb57 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -12149,16 +12149,21 @@ ts-pnp@^1.1.6:
   resolved "https://registry.yarnpkg.com/ts-pnp/-/ts-pnp-1.2.0.tgz#a500ad084b0798f1c3071af391e65912c86bca92"
   integrity sha512-csd+vJOb/gkzvcCHgTGSChYpy5f1/XKNsmvBGO4JXS+z1v2HobugDz4s1IeFXM3wZB44uczs+eazB5Q/ccdhQw==
 
-tslib@2.0.1, tslib@^2.0.0:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.0.1.tgz#410eb0d113e5b6356490eec749603725b021b43e"
-  integrity sha512-SgIkNheinmEBgx1IUNirK0TUD4X9yjjBRTqqjggWCU3pUEqIk3/Uwl3yRixYKT6WjQuGiwDv4NomL3wqRCj+CQ==
+tslib@2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.0.2.tgz#462295631185db44b21b1ea3615b63cd1c038242"
+  integrity sha512-wAH28hcEKwna96/UacuWaVspVLkg4x1aDM9JlzqaQTOFczCktkVAb5fmXChgandR1EraDPs2w8P+ozM+oafwxg==
 
 tslib@^1.10.0, tslib@^1.13.0, tslib@^1.8.1, tslib@^1.9.0, tslib@^1.9.3:
   version "1.13.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.13.0.tgz#c881e13cc7015894ed914862d276436fa9a47043"
   integrity sha512-i/6DQjL8Xf3be4K/E6Wgpekn5Qasl1usyw++dAA35Ue5orEn65VIxOA+YvNNl9HV3qv70T7CNwjODHZrLwvd1Q==
 
+tslib@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.0.1.tgz#410eb0d113e5b6356490eec749603725b021b43e"
+  integrity sha512-SgIkNheinmEBgx1IUNirK0TUD4X9yjjBRTqqjggWCU3pUEqIk3/Uwl3yRixYKT6WjQuGiwDv4NomL3wqRCj+CQ==
+
 tslint-no-circular-imports@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/tslint-no-circular-imports/-/tslint-no-circular-imports-0.7.0.tgz#9df0a15654d66b172e0b7843eed073fa5ae99b5f"