diff --git a/apps/api/pyproject.toml b/apps/api/pyproject.toml
index 6270abea..8409754e 100644
--- a/apps/api/pyproject.toml
+++ b/apps/api/pyproject.toml
@@ -44,7 +44,7 @@ dev = [
     "pytest-asyncio>=1.3.0,<2",
     "pytest-cov>=7.1.0,<8",
     "coverage[toml]>=7.14.0,<8",
-    "diff-cover>=9.5.0,<10",
+    "diff-cover>=10.2.0,<11",
     "ruff>=0.15.12,<0.16",
     "pyright>=1.1.409,<2",
     "httpx>=0.28.0",
diff --git a/apps/api/uv.lock b/apps/api/uv.lock
index f9f281a5..954f8bd2 100644
--- a/apps/api/uv.lock
+++ b/apps/api/uv.lock
@@ -346,7 +346,7 @@ requires-dist = [
 dev = [
     { name = "asgi-lifespan", specifier = ">=2.1.0,<3" },
     { name = "coverage", extras = ["toml"], specifier = ">=7.14.0,<8" },
-    { name = "diff-cover", specifier = ">=9.5.0,<10" },
+    { name = "diff-cover", specifier = ">=10.2.0,<11" },
     { name = "httpx", specifier = ">=0.28.0" },
     { name = "pre-commit", specifier = ">=4.0.0,<5" },
     { name = "pyright", specifier = ">=1.1.409,<2" },
@@ -482,7 +482,7 @@ wheels = [
 
 [[package]]
 name = "diff-cover"
-version = "9.7.2"
+version = "10.2.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "chardet" },
@@ -490,9 +490,9 @@ dependencies = [
     { name = "pluggy" },
     { name = "pygments" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/e1/66/c200febf00c8b0115825a99c3fdb2e77798419b8a632b1f8e4c81a75e734/diff_cover-9.7.2.tar.gz", hash = "sha256:872c820d2ecbf79c61d52c7dc70419015e0ab9289589566c791dd270fc0c6e3b", size = 100374, upload-time = "2025-11-11T02:49:34.883Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/99/b4/eee71d1e338bc1f9bd3539b46b70e303dac061324b759c9a80fa3c96d90d/diff_cover-10.2.0.tar.gz", hash = "sha256:61bf83025f10510c76ef6a5820680cf61b9b974e8f81de70c57ac926fa63872a", size = 102473, upload-time = "2026-01-09T01:59:07.605Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/21/dd/6db45462ffbfe3791c6de81be5db1c9e883e6b664ae39fc8adf947c738a6/diff_cover-9.7.2-py3-none-any.whl", hash = "sha256:cd6498620c747c2493a6c83c14362c32868bfd91cd8d0dd093f136070ec4ffc5", size = 56015, upload-time = "2025-11-11T02:49:33.294Z" },
+    { url = "https://files.pythonhosted.org/packages/b3/2c/61eeb887055a37150db824b6bf830e821a736580769ac2fea4eadb0d613f/diff_cover-10.2.0-py3-none-any.whl", hash = "sha256:59c328595e0b8948617cc5269af9e484c86462e2844bfcafa3fb37f8fca0af87", size = 56748, upload-time = "2026-01-09T01:59:06.028Z" },
 ]
 
 [[package]]