diff --git a/pyproject.toml b/pyproject.toml
index f313ac5..3c854f6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ mergen-supervise = "mergen_supervise:main"
 [dependency-groups]
 dev = [
   "coverage>=7,<8",
-  "jsonschema>=4.25.1,<5",
+  "jsonschema>=4.26.0,<5",
   "mypy>=1.11,<2",
   "pytest>=8,<9",
   "pytest-cov>=7.1.0,<8",