diff --git a/pyproject.toml b/pyproject.toml
index 6f87f20..ca26532 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,7 +42,7 @@ development = [
   "pytest==8.4.2; python_version <= '3.11'",
   "pytest==9.1.1; python_version > '3.11'",
   "twine==7.0.0",
-  "virtualenv==21.11.1",
+  "virtualenv==21.12.1",
   "wheel==0.48.0",
 ]
 lint = [