diff --git a/CHANGELOG.md b/CHANGELOG.md
index d19b2ab8df..4942c9c9a5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## Unreleased
 
+### Added
+
+* Add `socket_options` argument to `httpx.HTTPTransport` and `httpx.AsyncHTTPTransport` classes. (#2716)
+
 ### Fixed
 
 * Return `500` error response instead of exceptions when `raise_app_exceptions=False` is set on `ASGITransport`. (#2669)
diff --git a/httpx/_transports/default.py b/httpx/_transports/default.py
index fca7de98d9..1aebd5c5a5 100644
--- a/httpx/_transports/default.py
+++ b/httpx/_transports/default.py
@@ -53,6 +53,12 @@
 T = typing.TypeVar("T", bound="HTTPTransport")
 A = typing.TypeVar("A", bound="AsyncHTTPTransport")
 
+SOCKET_OPTION = typing.Union[
+    typing.Tuple[int, int, int],
+    typing.Tuple[int, int, typing.Union[bytes, bytearray]],
+    typing.Tuple[int, int, None, int],
+]
+
 
 @contextlib.contextmanager
 def map_httpcore_exceptions() -> typing.Iterator[None]:
@@ -122,6 +128,7 @@ def __init__(
         uds: typing.Optional[str] = None,
         local_address: typing.Optional[str] = None,
         retries: int = 0,
+        socket_options: typing.Optional[typing.Iterable[SOCKET_OPTION]] = None,
     ) -> None:
         ssl_context = create_ssl_context(verify=verify, cert=cert, trust_env=trust_env)
 
@@ -136,6 +143,7 @@ def __init__(
                 uds=uds,
                 local_address=local_address,
                 retries=retries,
+                socket_options=socket_options,
             )
         elif proxy.url.scheme in ("http", "https"):
             self._pool = httpcore.HTTPProxy(
@@ -153,6 +161,7 @@ def __init__(
                 keepalive_expiry=limits.keepalive_expiry,
                 http1=http1,
                 http2=http2,
+                socket_options=socket_options,
             )
         elif proxy.url.scheme == "socks5":
             try:
@@ -257,6 +266,7 @@ def __init__(
         uds: typing.Optional[str] = None,
         local_address: typing.Optional[str] = None,
         retries: int = 0,
+        socket_options: typing.Optional[typing.Iterable[SOCKET_OPTION]] = None,
     ) -> None:
         ssl_context = create_ssl_context(verify=verify, cert=cert, trust_env=trust_env)
 
@@ -271,6 +281,7 @@ def __init__(
                 uds=uds,
                 local_address=local_address,
                 retries=retries,
+                socket_options=socket_options,
             )
         elif proxy.url.scheme in ("http", "https"):
             self._pool = httpcore.AsyncHTTPProxy(
@@ -288,6 +299,7 @@ def __init__(
                 keepalive_expiry=limits.keepalive_expiry,
                 http1=http1,
                 http2=http2,
+                socket_options=socket_options,
             )
         elif proxy.url.scheme == "socks5":
             try:
diff --git a/pyproject.toml b/pyproject.toml
index d5313c64cf..30228c120e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ classifiers = [
 ]
 dependencies = [
     "certifi",
-    "httpcore>=0.15.0,<0.18.0",
+    "httpcore>=0.17.2,<0.18.0",
     "idna",
     "sniffio",
 ]