diff --git a/yarn.lock b/yarn.lock
index a855fb5..f8f09dc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -926,8 +926,8 @@ acorn-walk@^6.0.1:
   resolved "https://registry.yarnpkg.com/acorn-walk/-/acorn-walk-6.1.0.tgz#c957f4a1460da46af4a0388ce28b4c99355b0cbc"
 
 acorn@^5.0.0, acorn@^5.5.3, acorn@^5.6.2:
-  version "5.7.3"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
+  version "5.7.4"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.4.tgz#3e8d8a9947d0599a1796d10225d7432f4a4acf5e"
 
 acorn@^6.0.1, acorn@^6.0.2:
   version "6.0.2"
@@ -1985,7 +1985,7 @@ color@^3.0.0:
 
 colors@0.5.x:
   version "0.5.1"
-  resolved "http://registry.npmjs.org/colors/-/colors-0.5.1.tgz#7d0023eaeb154e8ee9fce75dcb923d0ed1667774"
+  resolved "https://registry.npmjs.org/colors/-/colors-0.5.1.tgz#7d0023eaeb154e8ee9fce75dcb923d0ed1667774"
 
 colors@~1.1.2:
   version "1.1.2"
@@ -2654,7 +2654,7 @@ 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@~1.1.1:
   version "1.1.3"
@@ -7905,7 +7905,7 @@ slash@^2.0.0:
 
 slice-ansi@0.0.4:
   version "0.0.4"
-  resolved "http://registry.npmjs.org/slice-ansi/-/slice-ansi-0.0.4.tgz#edbf8903f66f7ce2f8eafd6ceed65e264c831b35"
+  resolved "https://registry.npmjs.org/slice-ansi/-/slice-ansi-0.0.4.tgz#edbf8903f66f7ce2f8eafd6ceed65e264c831b35"
 
 slice-ansi@1.0.0:
   version "1.0.0"