diff --git a/experimental/babel-preset-env/.github/stale.yml b/experimental/babel-preset-env/.github/stale.yml
new file mode 100644
index 0000000000..b9ab60537b
--- /dev/null
+++ b/experimental/babel-preset-env/.github/stale.yml
@@ -0,0 +1,24 @@
+# Configuration for probot-stale - https://github.com/probot/stale
+
+# Number of days of inactivity before an Issue or Pull Request becomes stale
+daysUntilStale: 60
+# Number of days of inactivity before a stale Issue or Pull Request is closed
+daysUntilClose: 7
+# Issues or Pull Requests with these labels will never be considered stale. Set to `[]` to disable
+exemptLabels:
+  - has pr
+  - pinned
+  - security
+# Label to use when marking as stale
+staleLabel: stale
+# Comment to post when marking as stale. Set to `false` to disable
+markComment: >
+  This issue has been automatically marked as `stale` because it has not had
+  recent activity 😴. It will be closed if no further activity occurs. Thank you
+  for your contributions 👌!
+# Comment to post when removing the stale label. Set to `false` to disable
+unmarkComment: false
+# Comment to post when closing a stale Issue or Pull Request. Set to `false` to disable
+closeComment: false
+# Limit to only `issues` or `pulls`
+# only: issues
diff --git a/experimental/babel-preset-env/CHANGELOG.md b/experimental/babel-preset-env/CHANGELOG.md
index 98e964df0f..c0910dabae 100644
--- a/experimental/babel-preset-env/CHANGELOG.md
+++ b/experimental/babel-preset-env/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## v1.5.2 (2017-06-07)
+
+### :bug: Bug Fix
+
+- Ensure explicit targets always override browsers key targets ([#346](https://github.com/babel/babel-preset-env/pull/346)) (@existentialism)
+
+`browser` targets should be overridden by explicit targets, and we inadvertently broke this when we landed string version support.
+
 ## v1.5.1 (2017-05-22)
 
 ### :bug: Bug Fix
diff --git a/experimental/babel-preset-env/data/built-ins.json b/experimental/babel-preset-env/data/built-ins.json
index dd478aabf7..e7aa303c7a 100644
--- a/experimental/babel-preset-env/data/built-ins.json
+++ b/experimental/babel-preset-env/data/built-ins.json
@@ -327,7 +327,6 @@
     "safari": "9",
     "node": "0.12",
     "ie": "11",
-    "android": "5",
     "ios": "9",
     "opera": "21",
     "electron": "0.2"
@@ -522,7 +521,6 @@
     "firefox": "28",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -543,7 +541,6 @@
     "firefox": "16",
     "safari": "9",
     "node": "0.12",
-    "android": "5",
     "ios": "9",
     "opera": "21",
     "electron": "0.2"
@@ -554,7 +551,6 @@
     "firefox": "32",
     "safari": "9",
     "node": "0.12",
-    "android": "5",
     "ios": "9",
     "opera": "21",
     "electron": "0.2"
@@ -575,7 +571,6 @@
     "firefox": "25",
     "safari": "9",
     "node": "0.12",
-    "android": "5",
     "ios": "9",
     "opera": "21",
     "electron": "0.2"
@@ -586,7 +581,6 @@
     "firefox": "31",
     "safari": "9",
     "node": "0.12",
-    "android": "5",
     "ios": "9",
     "opera": "21",
     "electron": "0.2"
@@ -597,7 +591,6 @@
     "firefox": "31",
     "safari": "9",
     "node": "0.12",
-    "android": "5",
     "ios": "9",
     "opera": "21",
     "electron": "0.2"
@@ -608,7 +601,6 @@
     "firefox": "25",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -619,7 +611,6 @@
     "firefox": "25",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -630,7 +621,6 @@
     "firefox": "25",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -641,7 +631,6 @@
     "firefox": "25",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -652,7 +641,6 @@
     "firefox": "31",
     "safari": "9",
     "node": "0.12",
-    "android": "5.1",
     "ios": "9",
     "opera": "25",
     "electron": "0.2"
@@ -663,7 +651,6 @@
     "firefox": "25",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -674,7 +661,6 @@
     "firefox": "25",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -685,7 +671,6 @@
     "firefox": "26",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -696,7 +681,6 @@
     "firefox": "27",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -707,7 +691,6 @@
     "firefox": "23",
     "safari": "7",
     "node": "0.12",
-    "android": "4.4",
     "ios": "7",
     "opera": "17",
     "electron": "0.2"
@@ -718,7 +701,6 @@
     "firefox": "25",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -729,7 +711,6 @@
     "firefox": "25",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -740,7 +721,6 @@
     "firefox": "25",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -751,7 +731,6 @@
     "firefox": "25",
     "safari": "9",
     "node": "0.12",
-    "android": "5.1",
     "ios": "9",
     "opera": "25",
     "electron": "0.2"
@@ -762,7 +741,6 @@
     "firefox": "25",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -773,7 +751,6 @@
     "firefox": "25",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -784,7 +761,6 @@
     "firefox": "25",
     "safari": "7.1",
     "node": "0.12",
-    "android": "5.1",
     "ios": "8",
     "opera": "25",
     "electron": "0.2"
@@ -834,6 +810,7 @@
     "edge": "15",
     "firefox": "48",
     "safari": "10",
+    "node": "8",
     "ios": "10",
     "opera": "44",
     "electron": "1.7"
@@ -843,6 +820,7 @@
     "edge": "15",
     "firefox": "48",
     "safari": "10",
+    "node": "8",
     "ios": "10",
     "opera": "44",
     "electron": "1.7"
diff --git a/experimental/babel-preset-env/data/plugins.json b/experimental/babel-preset-env/data/plugins.json
index bca57cae4e..79ff58aaee 100644
--- a/experimental/babel-preset-env/data/plugins.json
+++ b/experimental/babel-preset-env/data/plugins.json
@@ -175,7 +175,6 @@
     "firefox": "36",
     "safari": "9",
     "node": "0.12",
-    "android": "5.1",
     "ios": "9",
     "opera": "25",
     "electron": "0.2"
@@ -225,6 +224,7 @@
     "edge": "14",
     "firefox": "52",
     "safari": "10",
+    "node": "8",
     "ios": "10",
     "opera": "45",
     "electron": "1.7"
diff --git a/experimental/babel-preset-env/package.json b/experimental/babel-preset-env/package.json
index 50a7bc12a5..45a384ab1b 100644
--- a/experimental/babel-preset-env/package.json
+++ b/experimental/babel-preset-env/package.json
@@ -66,9 +66,8 @@
     "babel-preset-env": "2.0.0-alpha.1",
     "babel-register": "7.0.0-alpha.12",
     "chai": "^3.5.0",
-    "codecov": "^2.0.1",
-    "compat-table": "kangax/compat-table#1f0bb0913736fe8c4c11b139766c73b9cbedb9f2",
-    "electron-to-chromium": "^1.3.11",
+    "codecov": "^1.0.1",
+    "compat-table": "kangax/compat-table#d88c80ea6dcbc7064112eb46bb020718107892f7",
     "eslint": "^3.17.1",
     "eslint-config-babel": "^6.0.0",
     "eslint-plugin-flowtype": "^2.33.0",
diff --git a/experimental/babel-preset-env/test/targets-parser.spec.js b/experimental/babel-preset-env/test/targets-parser.spec.js
index 70697a8dd8..204a7d3457 100644
--- a/experimental/babel-preset-env/test/targets-parser.spec.js
+++ b/experimental/babel-preset-env/test/targets-parser.spec.js
@@ -32,7 +32,7 @@ describe("getTargets", () => {
         }),
         {
           chrome: "49.0.0",
-          firefox: "51.0.0",
+          firefox: "55.0.0",
           ie: "9.0.0",
           safari: "9.0.0",
         },