From e30c081d5ae15bbee0131e9fc2309d4c70da0baa Mon Sep 17 00:00:00 2001
From: William Woodruff <william@astral.sh>
Date: Sat, 7 Mar 2026 21:03:05 +0800
Subject: [PATCH] Send mint-token requests with a proper Content-Type (#18334)

## Summary

Using `.body()` meant that the request was sent without a
`Content-Type`, whereas we want to explicitly communicate that the
mint-token request is a JSON payload. Using `.json()` causes request to
send the `Content-Type` header by default.

## Test Plan

Existing coverage.

---------

Signed-off-by: William Woodruff <william@astral.sh>
---
 crates/uv-publish/Cargo.toml                     | 2 +-
 crates/uv-publish/src/trusted_publishing/pypi.rs | 2 +-
 crates/uv-publish/src/trusted_publishing/pyx.rs  | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/crates/uv-publish/Cargo.toml b/crates/uv-publish/Cargo.toml
index d02d8a591..b0298645c 100644
--- a/crates/uv-publish/Cargo.toml
+++ b/crates/uv-publish/Cargo.toml
@@ -36,7 +36,7 @@ futures = { workspace = true }
 glob = { workspace = true }
 itertools = { workspace = true }
 reqwest = { workspace = true }
-reqwest-middleware = { workspace = true }
+reqwest-middleware = { workspace = true, features = ["json"] }
 reqwest-retry = { workspace = true }
 rustc-hash = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
diff --git a/crates/uv-publish/src/trusted_publishing/pypi.rs b/crates/uv-publish/src/trusted_publishing/pypi.rs
index 54d3e6d73..5d1644211 100644
--- a/crates/uv-publish/src/trusted_publishing/pypi.rs
+++ b/crates/uv-publish/src/trusted_publishing/pypi.rs
@@ -83,7 +83,7 @@ impl TrustedPublishingService for PyPIPublishingService<'_> {
         let response = self
             .client
             .post(Url::from(mint_token_url.clone()))
-            .body(serde_json::to_vec(&mint_token_payload)?)
+            .json(&mint_token_payload)
             .send()
             .await
             .map_err(|err| {
diff --git a/crates/uv-publish/src/trusted_publishing/pyx.rs b/crates/uv-publish/src/trusted_publishing/pyx.rs
index 60fdba92c..5670272ef 100644
--- a/crates/uv-publish/src/trusted_publishing/pyx.rs
+++ b/crates/uv-publish/src/trusted_publishing/pyx.rs
@@ -109,7 +109,7 @@ impl TrustedPublishingService for PyxPublishingService<'_> {
         let response = self
             .client
             .post(Url::from(mint_token_url.clone()))
-            .body(serde_json::to_vec(&mint_token_payload)?)
+            .json(&mint_token_payload)
             .send()
             .await
             .map_err(|err| {