diff --git a/Cargo.toml b/Cargo.toml
index c056e17..1944a06 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,7 @@ name = "wreq_ruby"
 magnus = { version = "0.8", features = ["bytes"] }
 rb-sys = { version = "0.9.110", default-features = false }
 tokio = { version = "1.49.0", features = ["full"] }
-wreq = { version = "6.0.0-rc.26", features = [
+wreq = { version = "6.0.0-rc.28", features = [
     "query",
     "form",
     "json",
@@ -30,7 +30,7 @@ wreq = { version = "6.0.0-rc.26", features = [
     "deflate",
     "zstd",
 ] }
-wreq-util = "3.0.0-rc.9"
+wreq-util = "3.0.0-rc.10"
 serde = { version = "1.0", features = ["derive"] }
 serde_magnus = "0.10.0"
 indexmap = { version = "2.12.1", features = ["serde"] }
diff --git a/src/cookie.rs b/src/cookie.rs
index 88e39cd..060b4c1 100644
--- a/src/cookie.rs
+++ b/src/cookie.rs
@@ -222,12 +222,12 @@ impl Jar {
 
     /// Add a cookie to this jar.
     pub fn add_cookie(&self, cookie: &Cookie, url: String) {
-        gvl::nogvl(|| self.0.add_cookie(cookie.0.clone(), &url))
+        gvl::nogvl(|| self.0.add(cookie.0.clone(), &url))
     }
 
     /// Add a cookie str to this jar.
     pub fn add_cookie_str(&self, cookie: String, url: String) {
-        gvl::nogvl(|| self.0.add_cookie_str(&cookie, &url))
+        gvl::nogvl(|| self.0.add(cookie.as_ref(), &url))
     }
 
     /// Remove a cookie from this jar by name and URL.