diff --git a/yarn.lock b/yarn.lock
index 1365af0..10ca733 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1320,9 +1320,9 @@ acorn-walk@^6.1.1:
   integrity sha512-7evsyfH1cLOCdAzZAd43Cic04yKydNx0cF+7tiA19p1XnLLPU4dpCQOqpjqwokFe//vS0QqfqqjCS2JkiIs0cA==
 
 acorn@^6.0.7, acorn@^6.2.1:
-  version "6.4.0"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.0.tgz#b659d2ffbafa24baf5db1cdbb2c94a983ecd2784"
-  integrity sha512-gac8OEcQ2Li1dxIEWGZzsp2BitJxwkwcOm0zHAJLcPJaVvm58FRnk6RkuLRpU1EujipU2ZFODv2P9DLMfnV8mw==
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
+  integrity sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==
 
 address@^1.0.1:
   version "1.0.3"
@@ -3152,7 +3152,7 @@ domelementtype@1:
 
 domelementtype@^1.3.0:
   version "1.3.0"
-  resolved "http://registry.npmjs.org/domelementtype/-/domelementtype-1.3.0.tgz#b17aed82e8ab59e52dd9c19b1756e0fc187204c2"
+  resolved "https://registry.npmjs.org/domelementtype/-/domelementtype-1.3.0.tgz#b17aed82e8ab59e52dd9c19b1756e0fc187204c2"
 
 domelementtype@^2.0.1:
   version "2.0.1"
@@ -7876,7 +7876,7 @@ semver-diff@^3.1.1:
 
 semver@4.3.2:
   version "4.3.2"
-  resolved "http://registry.npmjs.org/semver/-/semver-4.3.2.tgz#c7a07158a80bedd052355b770d82d6640f803be7"
+  resolved "https://registry.npmjs.org/semver/-/semver-4.3.2.tgz#c7a07158a80bedd052355b770d82d6640f803be7"
 
 semver@7.0.0:
   version "7.0.0"
@@ -8479,7 +8479,7 @@ table@^5.2.3:
 
 tapable@^0.1.8:
   version "0.1.10"
-  resolved "http://registry.npmjs.org/tapable/-/tapable-0.1.10.tgz#29c35707c2b70e50d07482b5d202e8ed446dafd4"
+  resolved "https://registry.npmjs.org/tapable/-/tapable-0.1.10.tgz#29c35707c2b70e50d07482b5d202e8ed446dafd4"
 
 tapable@^1.0.0, tapable@^1.1.3:
   version "1.1.3"