diff --git a/README.md b/README.md
index 03aa7f4..c5cfa68 100644
--- a/README.md
+++ b/README.md
@@ -172,9 +172,10 @@ these steps:
 | `KRAKEN_RUN_BASE_CURRENCY`     | `str`              | The base currency e.g., `BTC`.                                                                                                                               |
 | `KRAKEN_RUN_QUOTE_CURRENCY`    | `str`              | The quote currency e.g., `USD`.                                                                                                                              |
 | `KRAKEN_RUN_AMOUNT_PER_GRID`   | `float`            | The amount to use per grid interval e.g., `100` (USD).                                                                                                       |
-| `KRAKEN_RUN_INTERVAL`          | `float`            | The interval between orders e.g., `0.04` to have 4 % intervals).                                                                                             |
+| `KRAKEN_RUN_INTERVAL`          | `float`            | The interval between orders e.g., `0.04` to have 4 % intervals.                                                                                              |
 | `KRAKEN_RUN_N_OPEN_BUY_ORDERS` | `int`              | The number of concurrent open buy orders, e.g., `3`.                                                                                                         |
 | `KRAKEN_RUN_MAX_INVESTMENT`    | `str`              | The maximum investment amount, e.g. `1000` USD.                                                                                                              |
+| `KRAKEN_RUN_FEE`               | `float`            | A custom fee percentage, e.g. `0.0026` for 0.26 % fee.                                                                                                       |
 | `KRAKEN_RUN_STRATEGY`          | `str`              | The trading strategy (e.g., `GridHODL`, `GridSell`, `SWING`, or `DCA`).                                                                                      |
 | `KRAKEN_RUN_TELEGRAM_TOKEN`    | `str`              | The Telegram bot token for notifications.                                                                                                                    |
 | `KRAKEN_RUN_TELEGRAM_CHAT_ID`  | `str`              | The Telegram chat ID for notifications.                                                                                                                      |
diff --git a/pyproject.toml b/pyproject.toml
index d8f9718..ec653eb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -56,7 +56,7 @@ package-dir = { "" = "src" }
 [tool.setuptools.packages.find]
 where = ["src"]
 include = ["kraken_infinity_grid*"]
-exclude = [".env"]
+exclude = [".env", "tests"]
 
 [tool.setuptools_scm]
 write_to = "src/kraken_infinity_grid/_version.py"