diff --git a/pyproject.toml b/pyproject.toml
index 4d2c5e299..d587eef7d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -80,7 +80,7 @@ optional-dependencies.dev = [
     "pytest-retry==1.7.0",
     "pytest-xdist==3.8.0",
     "pyyaml==6.0.3",
-    "requests-mock-flask==2026.2.16",
+    "requests-mock-flask==2026.4.2",
     "ruff==0.15.9",
     # We add shellcheck-py not only for shell scripts and shell code blocks,
     # but also because having it installed means that ``actionlint-py`` will