diff --git a/pyproject.toml b/pyproject.toml
index 5972127..c9dc780 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ classifiers = [
 python = "==3.*,>=3.8.0"
 bluepy = "^1.3"
 paho-mqtt = "^1.5.0"
-tomlkit = "^0.6.0"
+tomlkit = ">=0.6,<0.8"
 click = "^7.1.2"
 
 [tool.poetry.dev-dependencies]