diff --git a/Pipfile b/Pipfile
index 6b0c22c..f83bb5a 100644
--- a/Pipfile
+++ b/Pipfile
@@ -4,13 +4,13 @@ verify_ssl = true
 name = "pypi"
 
 [packages]
-gitpython = "*"
-isort = "*"
-autoflake = "*"
-black = "*"
-flake8 = "*"
-pylint = "*"
-vulture = "*"
+gitpython = "==3.1.*"
+isort = "==5.10.*"
+autoflake = "==1.4.*"
+black = "==21.10b0"
+flake8 = "==3.*"
+pylint = "==2.11.*"
+vulture = "==2.3.*"
 
 [dev-packages]
 pytest = "*"
diff --git a/Pipfile.lock b/Pipfile.lock
index 958e11c..0989fa2 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "ecf2c0be4133978263449a6c210a8fddea505978b094729b13046e987be28a1c"
+            "sha256": "ce8c0596f0dc850507388b0e2167e20981c3de8e5bae027a12221e4726a86b98"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -18,11 +18,11 @@
     "default": {
         "astroid": {
             "hashes": [
-                "sha256:0755c998e7117078dcb7d0bda621391dd2a85da48052d948c7411ab187325346",
-                "sha256:1e83a69fd51b013ebf5912d26b9338d6643a55fec2f20c787792680610eed4a2"
+                "sha256:11f7356737b624c42e21e71fe85eea6875cb94c03c82ac76bd535a0ff10b0f25",
+                "sha256:abc423a1e85bc1553954a14f2053473d2b7f8baf32eae62a328be24f436b5107"
             ],
             "markers": "python_version ~= '3.6'",
-            "version": "==2.8.4"
+            "version": "==2.8.5"
         },
         "autoflake": {
             "hashes": [
@@ -49,11 +49,11 @@
         },
         "flake8": {
             "hashes": [
-                "sha256:479b1304f72536a55948cb40a32dce8bb0ffe3501e26eaf292c7e60eb5e0428d",
-                "sha256:806e034dda44114815e23c16ef92f95c91e4c71100ff52813adf7132a6ad870d"
+                "sha256:07528381786f2a6237b061f6e96610a4167b226cb926e2aa2b6b1d78057c576b",
+                "sha256:bf8fd333346d844f616e8d47905ef3a3384edae6b4e9beb0c5101e25e3110907"
             ],
             "index": "pypi",
-            "version": "==4.0.1"
+            "version": "==3.9.2"
         },
         "gitdb": {
             "hashes": [
@@ -138,19 +138,19 @@
         },
         "pycodestyle": {
             "hashes": [
-                "sha256:720f8b39dde8b293825e7ff02c475f3077124006db4f440dcbc9a20b76548a20",
-                "sha256:eddd5847ef438ea1c7870ca7eb78a9d47ce0cdb4851a5523949f2601d0cbbe7f"
+                "sha256:514f76d918fcc0b55c6680472f0a37970994e07bbb80725808c17089be302068",
+                "sha256:c389c1d06bf7904078ca03399a4816f974a1d590090fecea0c63ec26ebaf1cef"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
-            "version": "==2.8.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==2.7.0"
         },
         "pyflakes": {
             "hashes": [
-                "sha256:05a85c2872edf37a4ed30b0cce2f6093e1d0581f8c19d7393122da7e25b2b24c",
-                "sha256:3bb3a3f256f4b7968c9c788781e4ff07dce46bdf12339dcda61053375426ee2e"
+                "sha256:7893783d01b8a89811dd72d7dfd4d84ff098e5eed95cfa8905b22bbffe52efc3",
+                "sha256:f5bc8ecabc05bb9d291eb5203d6810b49040f6ff446a756326104746cc00c1db"
             ],
             "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==2.4.0"
+            "version": "==2.3.1"
         },
         "pylint": {
             "hashes": [
@@ -240,12 +240,10 @@
         },
         "typing-extensions": {
             "hashes": [
-                "sha256:49f75d16ff11f1cd258e1b988ccff82a3ca5570217d7ad8c5f48205dd99a677e",
-                "sha256:d8226d10bc02a29bcc81df19a26e56a9647f8b0a6d4a83924139f4a8b01f17b7",
-                "sha256:f1d25edafde516b146ecd0613dabcc61409817af4766fbbcfb8d1ad4ec441a34"
+                "sha256:829704698b22e13ec9eaf959122315eabb370b0884400e9818334d8b677023d9"
             ],
             "markers": "python_version < '3.10'",
-            "version": "==3.10.0.2"
+            "version": "==4.0.0"
         },
         "vulture": {
             "hashes": [
diff --git a/README.md b/README.md
index b2c8989..da0ffa3 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,22 @@ It will do:
 
 Obeys `.flake8`, `.pylintrc` and `whitelist.py` config files in the current directory.
 
+# Usage
+* install [`pipx`](https://github.com/pypa/pipx):
+```bash
+python3 -m pip install --user pipx
+python3 -m pipx ensurepath
+```
+* Install [`gadd`](https://pypi.org/project/gadd/) with `pipx`:
+```bash
+pipx install gadd
+```
+* Stage file to test:
+```bash
+git add some_file.py
+gadd
+```
+
 # Tutorial
 This is quick tutorial on hoe to create `pip` installable Python CLI tool.
 
diff --git a/pyproject.toml b/pyproject.toml
index 87f209f..8b07f3b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "gadd"
-version = "0.2.0"
+version = "0.2.1"
 description = "Sort imports, remove unused imports, run Black, flake8, pylint, vulture in one go for al staged .py files"
 authors = ["Almaz Kunpeissov <hello@akun.dev>"]
 keywords = ["Black", "Sort imports", "analysis", "automation", "autopep8", "code", "flake8", "formatter", "gofmt", "lint", "linter", "pyfmt", "pylint", "python", "remove unused imports", "rustfmt", "static", "vulture", "yapf"]
@@ -22,7 +22,7 @@ classifiers = [
 python = "^3.6"
 autoflake = "==1.4.*"
 black = "==21.10b0"
-flake8 =  "==4.0.*"
+flake8 =  "==3.*"
 gitpython = "==3.1.*"
 isort =  "==5.10.*"
 pylint = "==2.11.*"