diff --git a/packages/jest-diff/package.json b/packages/jest-diff/package.json
index 51d0800df18c..5dbe67e89597 100644
--- a/packages/jest-diff/package.json
+++ b/packages/jest-diff/package.json
@@ -7,6 +7,7 @@
   },
   "license": "BSD-3-Clause",
   "main": "build/index.js",
+  "browser": "build-es5/index.js",
   "dependencies": {
     "chalk": "^1.1.3",
     "diff": "^3.2.0",
diff --git a/packages/jest-matcher-utils/package.json b/packages/jest-matcher-utils/package.json
index 4409d64d9424..5aa231cd9a48 100644
--- a/packages/jest-matcher-utils/package.json
+++ b/packages/jest-matcher-utils/package.json
@@ -8,6 +8,7 @@
   },
   "license": "BSD-3-Clause",
   "main": "build/index.js",
+  "browser": "build-es5/index.js",
   "dependencies": {
     "chalk": "^1.1.3",
     "pretty-format": "^19.0.0"
diff --git a/packages/jest-matchers/package.json b/packages/jest-matchers/package.json
index c9d68739933e..664f5257222c 100644
--- a/packages/jest-matchers/package.json
+++ b/packages/jest-matchers/package.json
@@ -7,6 +7,7 @@
   },
   "license": "BSD-3-Clause",
   "main": "build/index.js",
+  "browser": "build-es5/index.js",
   "dependencies": {
     "jest-diff": "^19.0.0",
     "jest-matcher-utils": "^19.0.0",
diff --git a/packages/jest-message-util/package.json b/packages/jest-message-util/package.json
index adc2079dcdf1..3076a45371d9 100644
--- a/packages/jest-message-util/package.json
+++ b/packages/jest-message-util/package.json
@@ -7,6 +7,7 @@
   },
   "license": "BSD-3-Clause",
   "main": "build/index.js",
+  "browser": "build-es5/index.js",
   "dependencies": {
     "chalk": "^1.1.3",
     "micromatch": "^2.3.11",
diff --git a/packages/jest-mock/package.json b/packages/jest-mock/package.json
index ac6073b183d3..d16d58f6427d 100644
--- a/packages/jest-mock/package.json
+++ b/packages/jest-mock/package.json
@@ -6,5 +6,6 @@
     "url": "https://github.com/facebook/jest.git"
   },
   "license": "BSD-3-Clause",
-  "main": "build/index.js"
+  "main": "build/index.js",
+  "browser": "build-es5/index.js"
 }
diff --git a/packages/jest-regex-util/package.json b/packages/jest-regex-util/package.json
index ef0095c68019..555477e842b6 100644
--- a/packages/jest-regex-util/package.json
+++ b/packages/jest-regex-util/package.json
@@ -6,5 +6,6 @@
     "url": "https://github.com/facebook/jest.git"
   },
   "license": "BSD-3-Clause",
-  "main": "build/index.js"
+  "main": "build/index.js",
+  "browser": "build-es5/index.js"
 }
diff --git a/packages/jest-util/package.json b/packages/jest-util/package.json
index 1a27a0162f7a..a49321472a76 100644
--- a/packages/jest-util/package.json
+++ b/packages/jest-util/package.json
@@ -7,6 +7,7 @@
   },
   "license": "BSD-3-Clause",
   "main": "build/index.js",
+  "browser": "build-es5/index.js",
   "dependencies": {
     "chalk": "^1.1.3",
     "graceful-fs": "^4.1.11",
diff --git a/packages/jest-validate/package.json b/packages/jest-validate/package.json
index 00d9021d46d9..9a38f605c012 100644
--- a/packages/jest-validate/package.json
+++ b/packages/jest-validate/package.json
@@ -7,6 +7,7 @@
   },
   "license": "BSD-3-Clause",
   "main": "build/index.js",
+  "browser": "build-es5/index.js",
   "dependencies": {
     "chalk": "^1.1.3",
     "jest-matcher-utils": "^19.0.0",
diff --git a/packages/pretty-format/package.json b/packages/pretty-format/package.json
index 0b3f8cc26018..0934046fd8ab 100644
--- a/packages/pretty-format/package.json
+++ b/packages/pretty-format/package.json
@@ -8,6 +8,7 @@
   "license": "BSD-3-Clause",
   "description": "Stringify any JavaScript value.",
   "main": "build/index.js",
+  "browser": "build-es5/index.js",
   "author": "James Kyle <me@thejameskyle.com>",
   "dependencies": {
     "ansi-styles": "^3.0.0"