diff --git a/packages/metro-babylon7/package.json b/packages/metro-babylon7/package.json
index 426db633..f18e3680 100644
--- a/packages/metro-babylon7/package.json
+++ b/packages/metro-babylon7/package.json
@@ -12,6 +12,6 @@
     "cleanup-release": "test ! -e build && mv src build && mv src.real src"
   },
   "dependencies": {
-    "babylon": "^7.0.0-beta"
+    "babylon": "7.0.0-beta.40"
   }
 }
diff --git a/packages/metro/package.json b/packages/metro/package.json
index aecbf670..1342a193 100644
--- a/packages/metro/package.json
+++ b/packages/metro/package.json
@@ -13,8 +13,8 @@
     "cleanup-release": "test ! -e build && mv src build && mv src.real src"
   },
   "dependencies": {
-    "@babel/core": "^7.0.0-beta",
-    "@babel/generator": "^7.0.0-beta",
+    "@babel/core": "7.0.0-beta.40",
+    "@babel/generator": "7.0.0-beta.40",
     "@babel/helper-remap-async-to-generator": "7.0.0-beta.40",
     "@babel/plugin-external-helpers": "7.0.0-beta.40",
     "@babel/plugin-proposal-class-properties": "7.0.0-beta.40",
@@ -41,10 +41,11 @@
     "@babel/plugin-transform-shorthand-properties": "7.0.0-beta.40",
     "@babel/plugin-transform-spread": "7.0.0-beta.40",
     "@babel/plugin-transform-template-literals": "7.0.0-beta.40",
-    "@babel/register": "^7.0.0-beta",
-    "@babel/template": "^7.0.0-beta",
-    "@babel/traverse": "^7.0.0-beta",
-    "@babel/types": "^7.0.0-beta",
+    "@babel/plugin-transform-unicode-regex": "7.0.0-beta.40",
+    "@babel/register": "7.0.0-beta.40",
+    "@babel/template": "7.0.0-beta.40",
+    "@babel/traverse": "7.0.0-beta.40",
+    "@babel/types": "7.0.0-beta.40",
     "absolute-path": "^0.0.0",
     "async": "^2.4.0",
     "babel-core": "^6.24.1",
diff --git a/yarn.lock b/yarn.lock
index af83b0f4..5fa51185 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -24,7 +24,7 @@
     esutils "^2.0.2"
     js-tokens "^3.0.0"
 
-"@babel/core@^7.0.0-beta":
+"@babel/core@7.0.0-beta.40":
   version "7.0.0-beta.40"
   resolved "https://registry.yarnpkg.com/@babel/core/-/core-7.0.0-beta.40.tgz#455464dd81d499fd97d32b473f0331f74379a33f"
   dependencies:
@@ -43,7 +43,7 @@
     resolve "^1.3.2"
     source-map "^0.5.0"
 
-"@babel/generator@7.0.0-beta.40", "@babel/generator@^7.0.0-beta":
+"@babel/generator@7.0.0-beta.40":
   version "7.0.0-beta.40"
   resolved "https://registry.yarnpkg.com/@babel/generator/-/generator-7.0.0-beta.40.tgz#ab61f9556f4f71dbd1138949c795bb9a21e302ea"
   dependencies:
@@ -153,6 +153,12 @@
   dependencies:
     "@babel/types" "7.0.0-beta.40"
 
+"@babel/helper-regex@7.0.0-beta.40":
+  version "7.0.0-beta.40"
+  resolved "https://registry.yarnpkg.com/@babel/helper-regex/-/helper-regex-7.0.0-beta.40.tgz#b47018ecca8ff66bb390c34a95ff71bc01495833"
+  dependencies:
+    lodash "^4.2.0"
+
 "@babel/helper-remap-async-to-generator@7.0.0-beta.40":
   version "7.0.0-beta.40"
   resolved "https://registry.yarnpkg.com/@babel/helper-remap-async-to-generator/-/helper-remap-async-to-generator-7.0.0-beta.40.tgz#33414d1cc160ebf0991ebc60afebe36b08feae05"
@@ -359,7 +365,14 @@
   dependencies:
     "@babel/helper-annotate-as-pure" "7.0.0-beta.40"
 
-"@babel/register@^7.0.0-beta":
+"@babel/plugin-transform-unicode-regex@7.0.0-beta.40":
+  version "7.0.0-beta.40"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-unicode-regex/-/plugin-transform-unicode-regex-7.0.0-beta.40.tgz#a956187aad2965d7c095d64b1ae87eba10e0a2c6"
+  dependencies:
+    "@babel/helper-regex" "7.0.0-beta.40"
+    regexpu-core "^4.1.3"
+
+"@babel/register@7.0.0-beta.40":
   version "7.0.0-beta.40"
   resolved "https://registry.yarnpkg.com/@babel/register/-/register-7.0.0-beta.40.tgz#40df0bdbb2fe74a7c7b09af3d59b71c8cd53c4da"
   dependencies:
@@ -380,7 +393,7 @@
     babylon "7.0.0-beta.36"
     lodash "^4.2.0"
 
-"@babel/template@7.0.0-beta.40", "@babel/template@^7.0.0-beta":
+"@babel/template@7.0.0-beta.40":
   version "7.0.0-beta.40"
   resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.0.0-beta.40.tgz#034988c6424eb5c3268fe6a608626de1f4410fc8"
   dependencies:
@@ -402,7 +415,7 @@
     invariant "^2.2.0"
     lodash "^4.2.0"
 
-"@babel/traverse@7.0.0-beta.40", "@babel/traverse@^7.0.0-beta":
+"@babel/traverse@7.0.0-beta.40":
   version "7.0.0-beta.40"
   resolved "https://registry.yarnpkg.com/@babel/traverse/-/traverse-7.0.0-beta.40.tgz#d140e449b2e093ef9fe1a2eecc28421ffb4e521e"
   dependencies:
@@ -424,7 +437,7 @@
     lodash "^4.2.0"
     to-fast-properties "^2.0.0"
 
-"@babel/types@7.0.0-beta.40", "@babel/types@^7.0.0-beta":
+"@babel/types@7.0.0-beta.40":
   version "7.0.0-beta.40"
   resolved "https://registry.yarnpkg.com/@babel/types/-/types-7.0.0-beta.40.tgz#25c3d7aae14126abe05fcb098c65a66b6d6b8c14"
   dependencies:
@@ -1525,7 +1538,7 @@ babylon@7.0.0-beta.36:
   version "7.0.0-beta.36"
   resolved "https://registry.yarnpkg.com/babylon/-/babylon-7.0.0-beta.36.tgz#3a3683ba6a9a1e02b0aa507c8e63435e39305b9e"
 
-babylon@7.0.0-beta.40, babylon@^7.0.0-beta:
+babylon@7.0.0-beta.40:
   version "7.0.0-beta.40"
   resolved "https://registry.yarnpkg.com/babylon/-/babylon-7.0.0-beta.40.tgz#91fc8cd56d5eb98b28e6fde41045f2957779940a"
 
@@ -5167,10 +5180,20 @@ redent@^1.0.0:
     indent-string "^2.1.0"
     strip-indent "^1.0.1"
 
+regenerate-unicode-properties@^5.1.1:
+  version "5.1.3"
+  resolved "https://registry.yarnpkg.com/regenerate-unicode-properties/-/regenerate-unicode-properties-5.1.3.tgz#54f5891543468f36f2274b67c6bc4c033c27b308"
+  dependencies:
+    regenerate "^1.3.3"
+
 regenerate@^1.2.1:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/regenerate/-/regenerate-1.3.2.tgz#d1941c67bad437e1be76433add5b385f95b19260"
 
+regenerate@^1.3.3:
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/regenerate/-/regenerate-1.3.3.tgz#0c336d3980553d755c39b586ae3b20aa49c82b7f"
+
 regenerator-runtime@^0.10.0, regenerator-runtime@^0.10.5:
   version "0.10.5"
   resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.10.5.tgz#336c3efc1220adcedda2c9fab67b5a7955a33658"
@@ -5215,16 +5238,37 @@ regexpu-core@^2.0.0:
     regjsgen "^0.2.0"
     regjsparser "^0.1.4"
 
+regexpu-core@^4.1.3:
+  version "4.1.3"
+  resolved "https://registry.yarnpkg.com/regexpu-core/-/regexpu-core-4.1.3.tgz#fb81616dbbc2a917a7419b33f8379144f51eb8d0"
+  dependencies:
+    regenerate "^1.3.3"
+    regenerate-unicode-properties "^5.1.1"
+    regjsgen "^0.3.0"
+    regjsparser "^0.2.1"
+    unicode-match-property-ecmascript "^1.0.3"
+    unicode-match-property-value-ecmascript "^1.0.1"
+
 regjsgen@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/regjsgen/-/regjsgen-0.2.0.tgz#6c016adeac554f75823fe37ac05b92d5a4edb1f7"
 
+regjsgen@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/regjsgen/-/regjsgen-0.3.0.tgz#0ee4a3e9276430cda25f1e789ea6c15b87b0cb43"
+
 regjsparser@^0.1.4:
   version "0.1.5"
   resolved "https://registry.yarnpkg.com/regjsparser/-/regjsparser-0.1.5.tgz#7ee8f84dc6fa792d3fd0ae228d24bd949ead205c"
   dependencies:
     jsesc "~0.5.0"
 
+regjsparser@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/regjsparser/-/regjsparser-0.2.1.tgz#c3787553faf04e775c302102ef346d995000ec1c"
+  dependencies:
+    jsesc "~0.5.0"
+
 remove-trailing-separator@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/remove-trailing-separator/-/remove-trailing-separator-1.0.1.tgz#615ebb96af559552d4bf4057c8436d486ab63cc4"
@@ -6069,6 +6113,25 @@ ultron@1.0.x:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/ultron/-/ultron-1.0.2.tgz#ace116ab557cd197386a4e88f4685378c8b2e4fa"
 
+unicode-canonical-property-names-ecmascript@^1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/unicode-canonical-property-names-ecmascript/-/unicode-canonical-property-names-ecmascript-1.0.3.tgz#f6119f417467593c0086357c85546b6ad5abc583"
+
+unicode-match-property-ecmascript@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/unicode-match-property-ecmascript/-/unicode-match-property-ecmascript-1.0.3.tgz#db9b1cb4ffc67e0c5583780b1b59370e4cbe97b9"
+  dependencies:
+    unicode-canonical-property-names-ecmascript "^1.0.2"
+    unicode-property-aliases-ecmascript "^1.0.3"
+
+unicode-match-property-value-ecmascript@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/unicode-match-property-value-ecmascript/-/unicode-match-property-value-ecmascript-1.0.1.tgz#fea059120a016f403afd3bf586162b4db03e0604"
+
+unicode-property-aliases-ecmascript@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/unicode-property-aliases-ecmascript/-/unicode-property-aliases-ecmascript-1.0.3.tgz#ac3522583b9e630580f916635333e00c5ead690d"
+
 union-value@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/union-value/-/union-value-1.0.0.tgz#5c71c34cb5bad5dcebe3ea0cd08207ba5aa1aea4"