diff --git a/pyproject.toml b/pyproject.toml
index c0f6a28f..8819a588 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -70,7 +70,7 @@ optional-dependencies.dev = [
     "shfmt-py==3.7.0.1",
     "sphinx==8.1.3",
     "sphinx-copybutton==0.5.2",
-    "sphinx-substitution-extensions==2024.10.17",
+    "sphinx-substitution-extensions==2025.1.2",
     "sphinxcontrib-spelling==8.0.1",
     "sybil==9.0.0",
     "types-requests==2.32.0.20241016",