diff --git a/yarn.lock b/yarn.lock
old mode 100755
new mode 100644
index 77c762c9c..f2cc94b2d
--- a/yarn.lock
+++ b/yarn.lock
@@ -1172,8 +1172,8 @@ dns-equal@^1.0.0:
   resolved "https://registry.yarnpkg.com/dns-equal/-/dns-equal-1.0.0.tgz#b39e7f1da6eb0a75ba9c17324b34753c47e0654d"
 
 dns-packet@^1.0.1:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/dns-packet/-/dns-packet-1.2.2.tgz#a8a26bec7646438963fc86e06f8f8b16d6c8bf7a"
+  version "1.3.4"
+  resolved "https://registry.yarnpkg.com/dns-packet/-/dns-packet-1.3.4.tgz#e3455065824a2507ba886c55a89963bb107dec6f"
   dependencies:
     ip "^1.1.0"
     safe-buffer "^5.0.1"
@@ -3908,10 +3908,14 @@ rxjs@5.5.2:
   dependencies:
     symbol-observable "^1.0.1"
 
-safe-buffer@5.1.1, safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
+safe-buffer@5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
+safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
+
 sass-graph@^2.1.1:
   version "2.2.4"
   resolved "https://registry.yarnpkg.com/sass-graph/-/sass-graph-2.2.4.tgz#13fbd63cd1caf0908b9fd93476ad43a51d1e0b49"