diff --git a/pyproject.toml b/pyproject.toml
index 2d0046b..41bbd18 100755
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,7 +42,7 @@ flake8-bugbear = {version = "^19.8.0", optional = true}
 pylint = {version = "^2.3", optional = true}
 yapf = {version = "^0.27.0", optional = true}
 # Optional dependencies to be part of `format` extra
-isort = {version = "^4.3", optional = true}
+isort = {version = "^5.10", optional = true}
 seed-isort-config = {version = "^1.9.3", optional = true}
 black = {version = "stable", optional = true, allow-prereleases = true}
 # Optional dependencies to be part of `docs` extra