diff --git a/README.md b/README.md
index 6f2e974..c9f9d27 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,8 @@
 
 __[Live demo](https://markdown-it.github.io)__
 
+__v4.+ changed internals! Plugins need update. See [migration details](https://github.com/markdown-it/markdown-it/blob/master/docs/4.0_migration.md)__
+
 - Supports the CommonMark spec + syntax extensions + sugar (URL autolinking, typographer).
 - Configurable syntax! You can add new rules and even replace existing ones.
 - High speed!
diff --git a/package.json b/package.json
index 91d713d..98e2d52 100644
--- a/package.json
+++ b/package.json
@@ -18,18 +18,18 @@
     "test": "make test"
   },
   "dependencies": {
-    "argparse": "~ 1.0.0",
-    "entities": "~ 1.1.1",
-    "linkify-it": "~ 0.1.2",
-    "mdurl": "~ 1.0.0",
-    "uc.micro": "~ 0.1.0"
+    "argparse": "~1.0.0",
+    "entities": "~1.1.1",
+    "linkify-it": "~0.1.2",
+    "mdurl": "~1.0.0",
+    "uc.micro": "^1.0.0"
   },
   "devDependencies": {
     "ansi": "~0.3.0",
     "autoprefixer-stylus": "~0.5.0",
     "benchmark": "~1.0.0",
     "browserify": "*",
-    "chai": "~2.1.0",
+    "chai": "^2.1.0",
     "commonmark": "~0.18.1",
     "coveralls": "~2.11.2",
     "eslint": "0.13.0",