diff --git a/pyproject.toml b/pyproject.toml
index 50587d1b..add9b960 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -78,7 +78,7 @@ optional-dependencies.dev = [
     "pytest-xdist==3.8.0",
     "python-dotenv==1.2.1",
     "pyyaml==6.0.3",
-    "requests-mock-flask==2025.1.13",
+    "requests-mock-flask==2026.1.12",
     "ruff==0.14.11",
     # We add shellcheck-py not only for shell scripts and shell code blocks,
     # but also because having it installed means that ``actionlint-py`` will