diff --git a/Cargo.lock b/Cargo.lock
index c9d4d569..eb881a2f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1435,9 +1435,9 @@ dependencies = [
 
 [[package]]
 name = "ureq-proto"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f76790855073cbbdf9a23a7a622741480cebaec1d9b9b06b6ed2c55611fed37c"
+checksum = "a27729fd2c15426f48992a911ce31bd1f29c1cd0898c2c86b410d24f51c99eb3"
 dependencies = [
  "base64",
  "http",
diff --git a/Cargo.toml b/Cargo.toml
index 2ecaebc1..14a9e191 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -56,7 +56,7 @@ features = ["rustls", "platform-verifier", "native-tls", "socks-proxy", "cookies
 
 [dependencies]
 base64 = "0.22.1"
-ureq-proto = "0.2.2"
+ureq-proto = "0.2.3"
 # ureq-proto = { path = "../ureq-proto" }
 log = "0.4.22"
 once_cell = "1.19.0"
diff --git a/src/lib.rs b/src/lib.rs
index 58f06cb7..c8460fc5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -913,6 +913,22 @@ pub(crate) mod test {
         let _ = agent.get("http://cookie.test/cookie-test").call().unwrap();
     }
 
+    #[test]
+    #[cfg(feature = "_test")]
+    fn http_connect_proxy() {
+        init_test_log();
+
+        let proxy = Proxy::new("http://my_proxy:1234/connect-proxy").unwrap();
+
+        let agent = Agent::config_builder()
+            .proxy(Some(proxy))
+            .build()
+            .new_agent();
+
+        let mut res = agent.get("http://httpbin.org/get").call().unwrap();
+        res.body_mut().read_to_string().unwrap();
+    }
+
     // This doesn't need to run, just compile.
     fn _ensure_send_sync() {
         fn is_send(_t: impl Send) {}
diff --git a/src/unversioned/transport/test.rs b/src/unversioned/transport/test.rs
index d5716e5d..b1be72ec 100644
--- a/src/unversioned/transport/test.rs
+++ b/src/unversioned/transport/test.rs
@@ -338,6 +338,25 @@ fn setup_default_handlers(handlers: &mut Vec<TestHandler>) {
         handlers,
     );
 
+    maybe_add(
+        TestHandler::new("/connect-proxy", |_uri, req, w| {
+            assert_eq!(req.uri(), "httpbin.org:80");
+            write!(
+                w,
+                "HTTP/1.1 200 OK\r\n\
+                \r\n\
+                HTTP/1.1 200 OK\r\n\
+                Content-Type: application/json\r\n\
+                Content-Length: {}\r\n\
+                \r\n",
+                HTTPBIN_GET.as_bytes().len()
+            )?;
+            w.write_all(HTTPBIN_GET.as_bytes())?;
+            Ok(())
+        }),
+        handlers,
+    );
+
     #[cfg(feature = "charset")]
     {
         let (cow, _, _) =