diff --git a/packages/pkg-tests/package.json b/packages/pkg-tests/package.json
index 83ee24d091..e3481a449b 100644
--- a/packages/pkg-tests/package.json
+++ b/packages/pkg-tests/package.json
@@ -7,7 +7,7 @@
         "pkg-tests-specs"
     ],
     "dependencies": {
-        "babel-preset-env": "^1.6.1",
+        "babel-preset-env": "^1.7.0",
         "babel-preset-flow": "^6.23.0",
         "flow-bin": "^0.66.0",
         "jest": "^23.6.0",
diff --git a/packages/pkg-tests/yarn.lock b/packages/pkg-tests/yarn.lock
index d63bbd33ba..1eb43d352c 100644
--- a/packages/pkg-tests/yarn.lock
+++ b/packages/pkg-tests/yarn.lock
@@ -598,9 +598,10 @@ babel-plugin-transform-strict-mode@^6.24.1:
     babel-runtime "^6.22.0"
     babel-types "^6.24.1"
 
-babel-preset-env@^1.6.1:
-  version "1.6.1"
-  resolved "https://registry.yarnpkg.com/babel-preset-env/-/babel-preset-env-1.6.1.tgz#a18b564cc9b9afdf4aae57ae3c1b0d99188e6f48"
+babel-preset-env@^1.7.0:
+  version "1.7.0"
+  resolved "https://registry.yarnpkg.com/babel-preset-env/-/babel-preset-env-1.7.0.tgz#dea79fa4ebeb883cd35dab07e260c1c9c04df77a"
+  integrity sha512-9OR2afuKDneX2/q2EurSftUYM0xGu4O2D9adAhVfADDhrYDaxXV0rBbevVYoY9n6nyX1PmQW/0jtpJvUNr9CHg==
   dependencies:
     babel-plugin-check-es2015-constants "^6.22.0"
     babel-plugin-syntax-trailing-function-commas "^6.22.0"
@@ -629,7 +630,7 @@ babel-preset-env@^1.6.1:
     babel-plugin-transform-es2015-unicode-regex "^6.22.0"
     babel-plugin-transform-exponentiation-operator "^6.22.0"
     babel-plugin-transform-regenerator "^6.22.0"
-    browserslist "^2.1.2"
+    browserslist "^3.2.6"
     invariant "^2.2.2"
     semver "^5.3.0"
 
@@ -798,12 +799,13 @@ browser-resolve@^1.11.3:
   dependencies:
     resolve "1.1.7"
 
-browserslist@^2.1.2:
-  version "2.11.3"
-  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-2.11.3.tgz#fe36167aed1bbcde4827ebfe71347a2cc70b99b2"
+browserslist@^3.2.6:
+  version "3.2.8"
+  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-3.2.8.tgz#b0005361d6471f0f5952797a76fc985f1f978fc6"
+  integrity sha512-WHVocJYavUwVgVViC0ORikPHQquXwVh939TaelZ4WDqpWgTX/FsGhl/+P4qBUAGcRvtOgDgC+xftNWWp2RUTAQ==
   dependencies:
-    caniuse-lite "^1.0.30000792"
-    electron-to-chromium "^1.3.30"
+    caniuse-lite "^1.0.30000844"
+    electron-to-chromium "^1.3.47"
 
 bser@^2.0.0:
   version "2.0.0"
@@ -841,9 +843,10 @@ camelcase@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
 
-caniuse-lite@^1.0.30000792:
-  version "1.0.30000810"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000810.tgz#47585fffce0e9f3593a6feea4673b945424351d9"
+caniuse-lite@^1.0.30000844:
+  version "1.0.30001245"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001245.tgz#45b941bbd833cb0fa53861ff2bae746b3c6ca5d4"
+  integrity sha512-768fM9j1PKXpOCKws6eTo3RHmvTUsG9UrpT4WoREFeZgJBTi4/X9g565azS/rVUGtqb8nt7FjLeF5u4kukERnA==
 
 caseless@~0.12.0:
   version "0.12.0"
@@ -1094,9 +1097,10 @@ ecc-jsbn@~0.1.1:
   dependencies:
     jsbn "~0.1.0"
 
-electron-to-chromium@^1.3.30:
-  version "1.3.34"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.34.tgz#d93498f40391bb0c16a603d8241b9951404157ed"
+electron-to-chromium@^1.3.47:
+  version "1.3.779"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.779.tgz#de55492a756deec63424f89fbe62aec9776f0e6d"
+  integrity sha512-nreave0y/1Qhmo8XtO6C/LpawNyC6U26+q7d814/e+tIqUK073pM+4xW7WUXyqCRa5K4wdxHmNMBAi8ap9nEew==
 
 end-of-stream@^1.0.0, end-of-stream@^1.1.0:
   version "1.4.1"
@@ -1654,13 +1658,7 @@ ini@~1.3.0:
   resolved "https://registry.yarnpkg.com/ini/-/ini-1.3.8.tgz#a29da425b48806f34767a4efce397269af28432c"
   integrity sha512-JV/yugV2uzW5iMRSiZAyDtQd+nxtUnjeLt0acNdw98kKLrvuRVyB80tsREOE7yvGVgalhZ6RNXCmEHkUKBKxew==
 
-invariant@^2.2.2:
-  version "2.2.2"
-  resolved "https://registry.yarnpkg.com/invariant/-/invariant-2.2.2.tgz#9e1f56ac0acdb6bf303306f338be3b204ae60360"
-  dependencies:
-    loose-envify "^1.0.0"
-
-invariant@^2.2.4:
+invariant@^2.2.2, invariant@^2.2.4:
   version "2.2.4"
   resolved "https://registry.yarnpkg.com/invariant/-/invariant-2.2.4.tgz#610f3c92c9359ce1db616e538008d23ff35158e6"
   integrity sha512-phJfQVBuaJM5raOpJjSfkiD6BpbCE4Ns//LaXl6wGYtUBY83nWS6Rf9tXm2e8VaK60JEjYldbPif/A2B1C2gNA==
@@ -3201,11 +3199,7 @@ sax@^1.2.4:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
 
-"semver@2 || 3 || 4 || 5", semver@^5.3.0, semver@^5.4.1, semver@^5.5.0:
-  version "5.5.0"
-  resolved "https://registry.yarnpkg.com/semver/-/semver-5.5.0.tgz#dc4bbc7a6ca9d916dee5d43516f0092b58f7b8ab"
-
-semver@^5.6.0:
+"semver@2 || 3 || 4 || 5", semver@^5.3.0, semver@^5.4.1, semver@^5.5.0, semver@^5.6.0:
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.6.0.tgz#7e74256fbaa49c75aa7c7a205cc22799cac80004"
   integrity sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg==