diff --git a/packages/base/package.json b/packages/base/package.json
index b7a585b1..81424e54 100644
--- a/packages/base/package.json
+++ b/packages/base/package.json
@@ -13,7 +13,8 @@
   "license": "MIT",
   "main": "src/index.js",
   "files": [
-    "src/"
+    "src/",
+    "!src/**/*.test.js"
   ],
   "scripts": {
     "lint:changelog": "auto-changelog validate",
diff --git a/packages/browser/package.json b/packages/browser/package.json
index bc86fc55..94251864 100644
--- a/packages/browser/package.json
+++ b/packages/browser/package.json
@@ -13,7 +13,8 @@
   "license": "MIT",
   "main": "src/index.js",
   "files": [
-    "src/"
+    "src/",
+    "!src/**/*.test.js"
   ],
   "scripts": {
     "lint:changelog": "auto-changelog validate",
diff --git a/packages/jest/package.json b/packages/jest/package.json
index da1f92f2..903d1bc5 100644
--- a/packages/jest/package.json
+++ b/packages/jest/package.json
@@ -13,7 +13,8 @@
   "license": "MIT",
   "main": "src/index.js",
   "files": [
-    "src/"
+    "src/",
+    "!src/**/*.test.js"
   ],
   "scripts": {
     "lint:changelog": "auto-changelog validate",
diff --git a/packages/mocha/package.json b/packages/mocha/package.json
index 131c259f..9bc61b12 100644
--- a/packages/mocha/package.json
+++ b/packages/mocha/package.json
@@ -13,7 +13,8 @@
   "license": "MIT",
   "main": "src/index.js",
   "files": [
-    "src/"
+    "src/",
+    "!src/**/*.test.js"
   ],
   "scripts": {
     "lint:changelog": "auto-changelog validate",
diff --git a/packages/nodejs/package.json b/packages/nodejs/package.json
index 491ab791..e5448c7d 100644
--- a/packages/nodejs/package.json
+++ b/packages/nodejs/package.json
@@ -13,7 +13,8 @@
   "license": "MIT",
   "main": "src/index.js",
   "files": [
-    "src/"
+    "src/",
+    "!src/**/*.test.js"
   ],
   "scripts": {
     "lint:changelog": "auto-changelog validate",
diff --git a/packages/typescript/package.json b/packages/typescript/package.json
index 7ead0562..2163a49d 100644
--- a/packages/typescript/package.json
+++ b/packages/typescript/package.json
@@ -13,7 +13,9 @@
   "license": "MIT",
   "main": "src/index.js",
   "files": [
-    "src/"
+    "src/",
+    "!src/**/*.test.js",
+    "!src/**/__test__"
   ],
   "scripts": {
     "lint:changelog": "auto-changelog validate",