diff --git a/yarn.lock b/yarn.lock
index 1dfab93445..6f88fb849c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1043,6 +1043,11 @@
   dependencies:
     defer-to-connect "^1.0.1"
 
+"@tootallnate/once@1":
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/@tootallnate/once/-/once-1.0.0.tgz#9c13c2574c92d4503b005feca8f2e16cc1611506"
+  integrity sha512-KYyTT/T6ALPkIRd2Ge080X/BsXvy9O0hcWTtMWkPvwAwF99+vn6Dv4GzrFT/Nn1LePr+FFDbRXXlqmsy9lw2zA==
+
 "@types/anymatch@*":
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/@types/anymatch/-/anymatch-1.3.1.tgz#336badc1beecb9dacc38bea2cf32adf627a8421a"
@@ -2663,16 +2668,15 @@ code-point-at@^1.0.0:
   integrity sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=
 
 codecov@^3.6.1:
-  version "3.6.4"
-  resolved "https://registry.yarnpkg.com/codecov/-/codecov-3.6.4.tgz#c993a58704ad5f15dcdd6aa3c3af22070c69eb18"
-  integrity sha512-R9zEcTR5/IDLepdGUHAkRMZOIKhBE1NRGS1N2H96zhBOskhdW9Q22GtYYyecbZL1aheU00D2F21nNBGRISui0A==
+  version "3.6.5"
+  resolved "https://registry.yarnpkg.com/codecov/-/codecov-3.6.5.tgz#d73ce62e8a021f5249f54b073e6f2d6a513f172a"
+  integrity sha512-v48WuDMUug6JXwmmfsMzhCHRnhUf8O3duqXvltaYJKrO1OekZWpB/eH6iIoaxMl8Qli0+u3OxptdsBOYiD7VAQ==
   dependencies:
     argv "0.0.2"
     ignore-walk "3.0.3"
     js-yaml "3.13.1"
     teeny-request "6.0.1"
     urlgrey "0.4.4"
-    validator "12.2.0"
 
 collection-visit@^1.0.0:
   version "1.0.0"
@@ -4948,10 +4952,11 @@ http-errors@~1.7.2:
     toidentifier "1.0.0"
 
 http-proxy-agent@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/http-proxy-agent/-/http-proxy-agent-4.0.0.tgz#6b74d332e1934a1107b97e97de4a00e267c790fe"
-  integrity sha512-GX0FA6+IcDf4Oxc/FBWgYj4zKgo/DnZrksaG9jyuQLExs6xlX+uI5lcA8ymM3JaZTRrF/4s2UX19wJolyo7OBA==
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/http-proxy-agent/-/http-proxy-agent-4.0.1.tgz#8a8c8ef7f5932ccf953c296ca8291b95aa74aa3a"
+  integrity sha512-k0zdNgqWTGA6aeIRVpvfVob4fL52dTfaehylg0Y4UvSySvOq/Y+BOyPrgpUrA7HylqvU8vIZGsRuXmspskV0Tg==
   dependencies:
+    "@tootallnate/once" "1"
     agent-base "6"
     debug "4"
 
@@ -9283,11 +9288,6 @@ validate-npm-package-license@^3.0.1:
     spdx-correct "^3.0.0"
     spdx-expression-parse "^3.0.0"
 
-validator@12.2.0:
-  version "12.2.0"
-  resolved "https://registry.yarnpkg.com/validator/-/validator-12.2.0.tgz#660d47e96267033fd070096c3b1a6f2db4380a0a"
-  integrity sha512-jJfE/DW6tIK1Ek8nCfNFqt8Wb3nzMoAbocBF6/Icgg1ZFSBpObdnwVY2jQj6qUqzhx5jc71fpvBWyLGO7Xl+nQ==
-
 vary@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/vary/-/vary-1.1.2.tgz#2299f02c6ded30d4a5961b0b9f74524a18f634fc"