diff --git a/pyproject.toml b/pyproject.toml
index 5bccba5f..baef0ca3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -102,7 +102,10 @@ tomli = { version = "2.3.0", python = "<3.11" }
 tox = "4.30.3"
 xmldiff = "2.7.0"
 bandit = "1.8.6"
-pyupgrade = "3.21.0"
+pyupgrade = [
+  { version = "3.21.0", python = "<3.10" },
+  { version = "3.21.2", python = ">=3.10" },
+]
 deptry = "0.23.1"
 # for tests, use the GPL-version of jsonschema format validators - they are faster
 jsonschema = { version = "*", extras = ["format"], optional=true }