diff --git a/yarn.lock b/yarn.lock
index 51dc731..891db04 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -814,9 +814,9 @@ acorn-dynamic-import@^4.0.0:
   integrity sha512-d3OEjQV4ROpoflsnUA8HozoIR504TFxNivYEUi6uwz0IYhBkTDXGuWlNdMtybRt3nqVx/L6XqMt0FxkXuWKZhw==
 
 acorn@^6.0.5:
-  version "6.0.7"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.0.7.tgz#490180ce18337270232d9488a44be83d9afb7fd3"
-  integrity sha512-HNJNgE60C9eOTgn974Tlp3dpLZdUr+SoxxDwPaY9J/kDNOLQTkaDgwBUXAF4SSsrAwD9RpdxuHK/EbuF+W9Ahw==
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
+  integrity sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==
 
 adjust-sourcemap-loader@^1.1.0:
   version "1.2.0"