diff --git a/package.json b/package.json
index 6884ab1..938d1a0 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   "dependencies": {
     "@salesforce/ts-types": "^2.0.9",
     "sinon": "^5.1.1",
-    "tslib": "^2.6.1"
+    "tslib": "^2.6.3"
   },
   "devDependencies": {
     "@salesforce/dev-scripts": "^9.1.2",
diff --git a/yarn.lock b/yarn.lock
index 57235a9..994a452 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4108,10 +4108,10 @@ tsconfig-paths@^3.15.0:
     minimist "^1.2.6"
     strip-bom "^3.0.0"
 
-tslib@^2.6.1, tslib@^2.6.2:
-  version "2.6.2"
-  resolved "https://registry.npmjs.org/tslib/-/tslib-2.6.2.tgz#703ac29425e7b37cd6fd456e92404d46d1f3e4ae"
-  integrity sha512-AEYxH93jGFPn/a2iVAwW87VuUIkR1FVUKB77NwMF7nBTDkDrrT/Hpt/IrCJ0QXhW27jTBDcf5ZY7w6RiqTMw2Q==
+tslib@^2.6.2, tslib@^2.6.3:
+  version "2.6.3"
+  resolved "https://registry.npmjs.org/tslib/-/tslib-2.6.3.tgz#0438f810ad7a9edcde7a241c3d80db693c8cbfe0"
+  integrity sha512-xNvxJEOUiWPGhUuUdQgAJPKOOJfGnIyKySOc09XkKsgdUV/3E2zvwZYdejjmRgPCgcym1juLH3226yA7sEFJKQ==
 
 type-check@^0.4.0, type-check@~0.4.0:
   version "0.4.0"