diff --git a/pyproject.toml b/pyproject.toml
index c2fd823c93e635b78733646dd4d2b3ca3df385b3..c1c0ba2c8cb68f2e83e09646019a8554a8ea4b14 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,6 +38,9 @@ pyaes = "^1.6.1"
 mnemonic = "^0.19"
 
 [tool.poetry.dev-dependencies]
+pytest = "^6.2.3"
+pytest-cov = "^2.12.0"
+pytest-sugar = "^0.9.4"
 black = {version = "^21.4b2", allow-prereleases = true}
 mypy = "^0.910"
 pylint = "^2.7.2"