diff --git a/end_to_end_tests/golden-record-custom/pyproject.toml b/end_to_end_tests/golden-record-custom/pyproject.toml
index 77865f65a..e92cfae3a 100644
--- a/end_to_end_tests/golden-record-custom/pyproject.toml
+++ b/end_to_end_tests/golden-record-custom/pyproject.toml
@@ -14,7 +14,7 @@ include = ["CHANGELOG.md", "custom_e2e/py.typed"]
 
 [tool.poetry.dependencies]
 python = "^3.6"
-httpx = ">=0.15.4,<0.17.0"
+httpx = ">=0.15.4,<0.18.0"
 attrs = "^20.1.0"
 python-dateutil = "^2.8.0"
 
diff --git a/end_to_end_tests/golden-record/pyproject.toml b/end_to_end_tests/golden-record/pyproject.toml
index d05055ecd..7085e2b68 100644
--- a/end_to_end_tests/golden-record/pyproject.toml
+++ b/end_to_end_tests/golden-record/pyproject.toml
@@ -14,7 +14,7 @@ include = ["CHANGELOG.md", "my_test_api_client/py.typed"]
 
 [tool.poetry.dependencies]
 python = "^3.6"
-httpx = ">=0.15.4,<0.17.0"
+httpx = ">=0.15.4,<0.18.0"
 attrs = "^20.1.0"
 python-dateutil = "^2.8.0"
 
diff --git a/openapi_python_client/templates/pyproject.toml.jinja b/openapi_python_client/templates/pyproject.toml.jinja
index bb26afa98..de856d4ce 100644
--- a/openapi_python_client/templates/pyproject.toml.jinja
+++ b/openapi_python_client/templates/pyproject.toml.jinja
@@ -14,7 +14,7 @@ include = ["CHANGELOG.md", "{{ package_name }}/py.typed"]
 
 [tool.poetry.dependencies]
 python = "^3.6"
-httpx = ">=0.15.4,<0.17.0"
+httpx = ">=0.15.4,<0.18.0"
 attrs = "^20.1.0"
 python-dateutil = "^2.8.0"
 
diff --git a/openapi_python_client/templates/setup.py.jinja b/openapi_python_client/templates/setup.py.jinja
index 7339b7ccc..bc2823cd9 100644
--- a/openapi_python_client/templates/setup.py.jinja
+++ b/openapi_python_client/templates/setup.py.jinja
@@ -14,6 +14,6 @@ setup(
     package_dir={"": "{{ package_name }}"},
     packages=find_packages(where="{{ package_name }}"),
     python_requires=">=3.6, <4",
-    install_requires=["httpx >= 0.15.0, < 0.17.0", "attrs >= 20.1.0", "python-dateutil >= 2.8.0, < 3"],
+    install_requires=["httpx >= 0.15.0, < 0.18.0", "attrs >= 20.1.0", "python-dateutil >= 2.8.0, < 3"],
     package_data={"": ["CHANGELOG.md"], "{{ package_name }}": ["py.typed"]},
 )
diff --git a/poetry.lock b/poetry.lock
index 62e7f93bb..42defe405 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -179,7 +179,7 @@ http2 = ["h2 (>=3,<5)"]
 
 [[package]]
 name = "httpx"
-version = "0.16.1"
+version = "0.17.0"
 description = "The next generation HTTP client."
 category = "main"
 optional = false
@@ -668,7 +668,7 @@ testing = ["pytest (>=3.5,!=3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6"
-content-hash = "b6a52b70db4ea03eda283efd4e65611530ab59b2091c675881e6cab696276f54"
+content-hash = "192ab706eb92d4283c09160f994d21d176d1ba3b70e878ac81b7f94450682e0a"
 
 [metadata.files]
 appdirs = [
@@ -765,8 +765,8 @@ httpcore = [
     {file = "httpcore-0.12.0.tar.gz", hash = "sha256:2526a38f31ac5967d38b7f593b5d8c4bd3fa82c21400402f866ba3312946acbf"},
 ]
 httpx = [
-    {file = "httpx-0.16.1-py3-none-any.whl", hash = "sha256:9cffb8ba31fac6536f2c8cde30df859013f59e4bcc5b8d43901cb3654a8e0a5b"},
-    {file = "httpx-0.16.1.tar.gz", hash = "sha256:126424c279c842738805974687e0518a94c7ae8d140cd65b9c4f77ac46ffa537"},
+    {file = "httpx-0.17.0-py3-none-any.whl", hash = "sha256:fe19522f7b0861a1f6ac83306360bb5b7fb1ed64633a1a04a33f04102a1bea60"},
+    {file = "httpx-0.17.0.tar.gz", hash = "sha256:4f7ab2fef7f929c5531abd4f413b41ce2c820e3202f2eeee498f2d92b6849f8d"},
 ]
 idna = [
     {file = "idna-2.10-py2.py3-none-any.whl", hash = "sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0"},
diff --git a/pyproject.toml b/pyproject.toml
index cfd71c995..45da3a77c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ importlib_metadata = {version = "^2.0.0", python = "<3.8"}
 pydantic = "^1.6.1"
 attrs = "^20.1.0"
 python-dateutil = "^2.8.1"
-httpx = ">=0.15.4,<0.17.0"
+httpx = ">=0.15.4,<0.18.0"
 autoflake = "^1.4"
 
 [tool.poetry.scripts]