diff --git a/yarn.lock b/yarn.lock
index 9eb710c..b631202 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9824,11 +9824,16 @@ tsdx@^0.6.1:
     tslib "^1.9.3"
     typescript "^3.4.5"
 
-tslib@1.9.3, tslib@^1.9.0, tslib@^1.9.3:
+tslib@1.9.3:
   version "1.9.3"
   resolved "https://registry.npmjs.org/tslib/-/tslib-1.9.3.tgz#d7e4dd79245d85428c4d7e4822a79917954ca286"
   integrity sha512-4krF8scpejhaOgqzBEcGM7yDIEfi0/8+8zDRZhNZZ2kjmHJ4hv3zCbQWxoJGz1iw5U0Jl0nma13xzHXcncMavQ==
 
+tslib@^1.9.0, tslib@^1.9.3:
+  version "1.12.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.12.0.tgz#d1fc9cacd06a1456c62f2902b361573e83d66473"
+  integrity sha512-5rxCQkP0kytf4H1T4xz1imjxaUUPMvc5aWp0rJ/VMIN7ClRiH1FwFvBt8wOeMasp/epeUnmSW6CixSIePtiLqA==
+
 tty-browserify@0.0.0:
   version "0.0.0"
   resolved "https://registry.npmjs.org/tty-browserify/-/tty-browserify-0.0.0.tgz#a157ba402da24e9bf957f9aa69d524eed42901a6"