diff --git a/poetry.lock b/poetry.lock
index a20ecbe8..879f887b 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -947,13 +947,13 @@ trio = ["trio (>=0.22.0,<1.0)"]
 
 [[package]]
 name = "httpx"
-version = "0.27.2"
+version = "0.28.0"
 description = "The next generation HTTP client."
 optional = false
 python-versions = ">=3.8"
 files = [
-    {file = "httpx-0.27.2-py3-none-any.whl", hash = "sha256:7bb2708e112d8fdd7829cd4243970f0c223274051cb35ee80c03301ee29a3df0"},
-    {file = "httpx-0.27.2.tar.gz", hash = "sha256:f7c2be1d2f3c3c3160d441802406b206c2b76f5947b11115e6df10c6c65e66c2"},
+    {file = "httpx-0.28.0-py3-none-any.whl", hash = "sha256:dc0b419a0cfeb6e8b34e85167c0da2671206f5095f1baa9663d23bcfd6b535fc"},
+    {file = "httpx-0.28.0.tar.gz", hash = "sha256:0858d3bab51ba7e386637f22a61d8ccddaeec5f3fe4209da3a6168dbb91573e0"},
 ]
 
 [package.dependencies]
@@ -961,7 +961,6 @@ anyio = "*"
 certifi = "*"
 httpcore = "==1.*"
 idna = "*"
-sniffio = "*"
 
 [package.extras]
 brotli = ["brotli", "brotlicffi"]
@@ -2819,4 +2818,4 @@ sqlite = ["aiosqlite"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8.0"
-content-hash = "7d38c94b0ab827eaafa0a03e4ac87d1df602d9fe88fd129bdec4348ab708e874"
+content-hash = "54b7abab937d782e2574f4ae74ac75dea6dfd11888b3c4d63946a76a1258382e"
diff --git a/pyproject.toml b/pyproject.toml
index d0568930..485446cc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -123,7 +123,7 @@ pytest-benchmark = "^4.0.0"
 nest-asyncio = "^1.6.0"
 
 pre-commit = ">=2.21,<4.0"
-httpx = ">=0.24.1,<0.28.0"
+httpx = ">=0.24.1,<0.29.0"
 asgi-lifespan = "^2.1.0"
 pydantic-extra-types = "^2.5.0"
 watchdog = "<5.0.0"