diff --git a/pyproject.toml b/pyproject.toml
index 6271e6b..3b9b0e8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ classifiers = [
 python = "^3.8"
 GitPython = "^3.0.0"
 colorama = "^0.4.0"
-termcolor = "^2.0.0"
+termcolor = ">= 2.0.0, < 4.0.0"
 
 [tool.poetry.dev-dependencies]
 coveralls = "^3.0.0"