diff --git a/package.json b/package.json
index 004956b..2141cd5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@sindresorhus/is",
-	"version": "3.1.2",
+	"version": "4.0.0",
 	"description": "Type check values",
 	"license": "MIT",
 	"repository": "sindresorhus/is",