diff --git a/src/client/request.rs b/src/client/request.rs
index f04f402b7..a63d739aa 100644
--- a/src/client/request.rs
+++ b/src/client/request.rs
@@ -544,9 +544,21 @@ impl ClientRequestBuilder {
 
         // set cookies
         if let Some(ref jar) = self.cookies {
-            for cookie in jar.delta() {
+            let ncookies = jar.iter().count();
+            if ncookies > 0 {
+                let mut payload = String::new();
+                for (ix, cookie) in jar.iter().enumerate() {
+                    payload.push_str(&cookie.name());
+                    payload.push('=');
+                    payload.push_str(&cookie.value());
+                    // semi-colon delimited, except for final k-v pair
+                    if ix < ncookies - 1 {
+                        payload.push(';');
+                        payload.push(' ');
+                    }
+                }
                 request.headers.append(
-                    header::COOKIE, HeaderValue::from_str(&cookie.to_string())?);
+                    header::COOKIE, HeaderValue::from_str(&payload)?);
             }
         }
         request.body = body.into();
diff --git a/src/client/response.rs b/src/client/response.rs
index cc401f8bd..944b4c839 100644
--- a/src/client/response.rs
+++ b/src/client/response.rs
@@ -82,12 +82,10 @@ impl ClientResponse {
         if self.as_ref().cookies.is_none() {
             let msg = self.as_mut();
             let mut cookies = Vec::new();
-            if let Some(val) = msg.headers.get(header::SET_COOKIE) {
+            for val in msg.headers.get_all(header::SET_COOKIE).iter() {
                 let s = str::from_utf8(val.as_bytes())
                     .map_err(CookieParseError::from)?;
-                for cookie in s.split("; ") {
-                    cookies.push(Cookie::parse_encoded(cookie)?.into_owned());
-                }
+                cookies.push(Cookie::parse_encoded(s)?.into_owned());
             }
             msg.cookies = Some(cookies)
         }