diff --git a/package-lock.json b/package-lock.json
index a4a6ba9..6b381c2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5174,9 +5174,9 @@
       }
     },
     "tslib": {
-      "version": "1.10.0",
-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.10.0.tgz",
-      "integrity": "sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ=="
+      "version": "1.12.0",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.12.0.tgz",
+      "integrity": "sha512-5rxCQkP0kytf4H1T4xz1imjxaUUPMvc5aWp0rJ/VMIN7ClRiH1FwFvBt8wOeMasp/epeUnmSW6CixSIePtiLqA=="
     },
     "tslint": {
       "version": "6.0.0",
diff --git a/package.json b/package.json
index adc402e..e445d8f 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "readline-sync": "1.4.10",
     "replacestream": "4.0.3",
     "ts-jest": "25.2.0",
-    "tslib": "1.10.0",
+    "tslib": "1.12.0",
     "tslint": "6.0.0",
     "tslint-config-prettier": "1.18.0",
     "typescript": "3.7.5"