diff --git a/yarn.lock b/yarn.lock
index 5ac115aa..d0872baf 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -30,13 +30,13 @@ accepts@~1.3.5:
 
 acorn-globals@^1.0.4:
   version "1.0.9"
-  resolved "http://registry.npmjs.org/acorn-globals/-/acorn-globals-1.0.9.tgz#55bb5e98691507b74579d0513413217c380c54cf"
+  resolved "https://registry.npmjs.org/acorn-globals/-/acorn-globals-1.0.9.tgz#55bb5e98691507b74579d0513413217c380c54cf"
   dependencies:
     acorn "^2.1.0"
 
 acorn@^2.1.0, acorn@^2.4.0:
   version "2.7.0"
-  resolved "http://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz#ab6e7d9d886aaca8b085bc3312b79a198433f0e7"
+  resolved "https://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz#ab6e7d9d886aaca8b085bc3312b79a198433f0e7"
 
 ajv@^5.3.0:
   version "5.5.2"
@@ -787,7 +787,7 @@ etag@~1.8.1:
 
 event-stream@~3.3.0:
   version "3.3.4"
-  resolved "http://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz#4ab4c9a0f5a54db9338b4c34d86bfce8f4b35571"
+  resolved "https://registry.npmjs.org/event-stream/-/event-stream-3.3.4.tgz#4ab4c9a0f5a54db9338b4c34d86bfce8f4b35571"
   dependencies:
     duplexer "~0.1.1"
     from "~0"
@@ -928,7 +928,7 @@ fbjs@^0.8.1, fbjs@^0.8.16, fbjs@^0.8.9:
 
 file-saver@1.3.8:
   version "1.3.8"
-  resolved "http://registry.npmjs.org/file-saver/-/file-saver-1.3.8.tgz#e68a30c7cb044e2fb362b428469feb291c2e09d8"
+  resolved "https://registry.npmjs.org/file-saver/-/file-saver-1.3.8.tgz#e68a30c7cb044e2fb362b428469feb291c2e09d8"
 
 fill-range@^4.0.0:
   version "4.0.0"
@@ -1482,7 +1482,7 @@ jsbn@~0.1.0:
 
 jsdom@^8.1.0:
   version "8.5.0"
-  resolved "http://registry.npmjs.org/jsdom/-/jsdom-8.5.0.tgz#d4d8f5dbf2768635b62a62823b947cf7071ebc98"
+  resolved "https://registry.npmjs.org/jsdom/-/jsdom-8.5.0.tgz#d4d8f5dbf2768635b62a62823b947cf7071ebc98"
   dependencies:
     abab "^1.0.0"
     acorn "^2.4.0"
@@ -2450,7 +2450,7 @@ react@^16.5.2:
 
 readable-stream@1.1.x:
   version "1.1.14"
-  resolved "http://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz#7cf4c54ef648e3813084c636dd2079e166c081d9"
+  resolved "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz#7cf4c54ef648e3813084c636dd2079e166c081d9"
   dependencies:
     core-util-is "~1.0.0"
     inherits "~2.0.1"
@@ -3031,10 +3031,8 @@ uncontrollable@^5.0.0:
     invariant "^2.2.4"
 
 undefsafe@^2.0.2:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/undefsafe/-/undefsafe-2.0.2.tgz#225f6b9e0337663e0d8e7cfd686fc2836ccace76"
-  dependencies:
-    debug "^2.2.0"
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/undefsafe/-/undefsafe-2.0.5.tgz#38733b9327bdcd226db889fb723a6efd162e6e2c"
 
 union-value@^1.0.0:
   version "1.0.0"