diff --git a/pyproject.toml b/pyproject.toml
index ad87347..6fca943 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ license = "MIT"
 python = "^3.7"
 
 [tool.poetry.dev-dependencies]
-coverage = "5.0b1"
+coverage = "5.2.1"
 
 [build-system]
 requires = ["poetry>=0.12"]