diff --git a/yarn.lock b/yarn.lock
index f41e1b7..1775412 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -766,8 +766,8 @@ spdx-license-ids@^1.0.2:
   resolved "https://registry.yarnpkg.com/spdx-license-ids/-/spdx-license-ids-1.2.2.tgz#c9df7a3424594ade6bd11900d596696dc06bac57"
 
 sprintf-js@^1.0.3:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.1.2.tgz#da1765262bf8c0f571749f2ad6c26300207ae673"
 
 string-width@^1.0.1, string-width@^1.0.2:
   version "1.0.2"
@@ -868,8 +868,8 @@ typescript@^2.2.1:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.2.1.tgz#4862b662b988a4c8ff691cc7969622d24db76ae9"
 
 underscore.string@^3.3.4:
-  version "3.3.4"
-  resolved "https://registry.yarnpkg.com/underscore.string/-/underscore.string-3.3.4.tgz#2c2a3f9f83e64762fdc45e6ceac65142864213db"
+  version "3.3.5"
+  resolved "https://registry.yarnpkg.com/underscore.string/-/underscore.string-3.3.5.tgz#fc2ad255b8bd309e239cbc5816fd23a9b7ea4023"
   dependencies:
     sprintf-js "^1.0.3"
     util-deprecate "^1.0.2"