diff --git a/poetry.lock b/poetry.lock
index 035ba1d3..4b86a2db 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -622,13 +622,13 @@ trio = ["trio (>=0.22.0,<1.0)"]
 
 [[package]]
 name = "httpx"
-version = "0.27.2"
+version = "0.28.1"
 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-0.28.1-py3-none-any.whl", hash = "sha256:d909fcccc110f8c7faf814ca82a9a4d816bc5a6dbfea25d6591d6985b8ba59ad"},
+    {file = "httpx-0.28.1.tar.gz", hash = "sha256:75e98c5f16b0f35b567856f597f06ff2270a374470a5c2392242528e3e3e42fc"},
 ]
 
 [package.dependencies]
@@ -636,7 +636,6 @@ anyio = "*"
 certifi = "*"
 httpcore = "==1.*"
 idna = "*"
-sniffio = "*"
 
 [package.extras]
 brotli = ["brotli", "brotlicffi"]
@@ -1798,4 +1797,4 @@ type = ["pytest-mypy"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.9"
-content-hash = "897734209ab1277e46c39271e3d00992626214544da868dbadef133b07122566"
+content-hash = "7a51453c25e4ad1f052528bfe7f17d330a8a87fcab706a090f36257573813e01"
diff --git a/pyproject.toml b/pyproject.toml
index 1eeb3c06..c0dec7be 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,7 +43,7 @@ python = "^3.9"
 apify-shared = ">=1.1.2"
 # TODO: relax the upper bound once the issue is resolved:
 # https://github.com/apify/apify-client-python/issues/313
-httpx = ">=0.25 <0.28.0"
+httpx = "<0.28.2"
 more_itertools = ">=10.0.0"
 
 [tool.poetry.group.dev.dependencies]