diff --git a/cirrus/server/poetry.lock b/cirrus/server/poetry.lock
index 3c82a5f544..6b62670efa 100644
--- a/cirrus/server/poetry.lock
+++ b/cirrus/server/poetry.lock
@@ -997,14 +997,14 @@ testing = ["fields", "hunter", "process-tests", "pytest-xdist", "six", "virtuale
 
 [[package]]
 name = "pytest-mock"
-version = "3.14.0"
+version = "3.15.0"
 description = "Thin-wrapper around the mock package for easier use with pytest"
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.9"
 groups = ["main"]
 files = [
-    {file = "pytest-mock-3.14.0.tar.gz", hash = "sha256:2719255a1efeceadbc056d6bf3df3d1c5015530fb40cf347c0f9afac88410bd0"},
-    {file = "pytest_mock-3.14.0-py3-none-any.whl", hash = "sha256:0b72c38033392a5f4621342fe11e9219ac11ec9d375f8e2a0c164539e0d70f6f"},
+    {file = "pytest_mock-3.15.0-py3-none-any.whl", hash = "sha256:ef2219485fb1bd256b00e7ad7466ce26729b30eadfc7cbcdb4fa9a92ca68db6f"},
+    {file = "pytest_mock-3.15.0.tar.gz", hash = "sha256:ab896bd190316b9d5d87b277569dfcdf718b2d049a2ccff5f7aca279c002a1cf"},
 ]
 
 [package.dependencies]
@@ -1476,4 +1476,4 @@ standard = ["colorama (>=0.4) ; sys_platform == \"win32\"", "httptools (>=0.6.3)
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.10.10"
-content-hash = "d2e623a68fd78b7da576f81b6d4476214c3598016c5e4c5a5331d8e2621c6106"
+content-hash = "5e7b4f1041c054221ada1cd0d5405c2e49f53371555600f5703596a03655531f"
diff --git a/cirrus/server/pyproject.toml b/cirrus/server/pyproject.toml
index d8fa6a4454..fd850a14ab 100644
--- a/cirrus/server/pyproject.toml
+++ b/cirrus/server/pyproject.toml
@@ -21,7 +21,7 @@ requests = "^2.32.4"
 pytest-asyncio = "^0.23.8"
 python-decouple = "^3.8"
 glean-sdk = "^53.2.0"
-pytest-mock = "^3.14.0"
+pytest-mock = "^3.15.0"
 mozilla-nimbus-shared = "^2.5.2"
 sentry-sdk = "^2.35.0"