diff --git a/yarn.lock b/yarn.lock
index d3e9e67..aab094b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5495,10 +5495,14 @@ rxjs@^5.5.6:
   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@^2.2.4:
   version "2.2.4"
   resolved "https://registry.yarnpkg.com/sass-graph/-/sass-graph-2.2.4.tgz#13fbd63cd1caf0908b9fd93476ad43a51d1e0b49"
@@ -6009,8 +6013,8 @@ sshpk@^1.7.0:
     tweetnacl "~0.14.0"
 
 ssri@^5.0.0:
-  version "5.2.1"
-  resolved "https://registry.yarnpkg.com/ssri/-/ssri-5.2.1.tgz#8b6eb873688759bd3c75a88dee74593d179bb73c"
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/ssri/-/ssri-5.3.0.tgz#ba3872c9c6d33a0704a7d71ff045e5ec48999d06"
   dependencies:
     safe-buffer "^5.1.1"