diff --git a/testing/cargo/APKBUILD b/testing/cargo/APKBUILD
index 7c70fcd6b007b914a1dcd42c0f3784b817357dc2..8df628e119b16258d86ac9031ba479d13f5013d4 100644
--- a/testing/cargo/APKBUILD
+++ b/testing/cargo/APKBUILD
@@ -21,7 +21,8 @@ subpackages="$pkgname-doc
 _ctarget="$CARCH-unknown-linux-musl"
 source="$pkgname-$pkgver.tar.gz::https://github.com/rust-lang/$pkgname/archive/$pkgver.tar.gz
 	https://github.com/rust-lang/rust-installer/archive/$_installer_gitrev/rust-installer-$_installer_gitrev.tar.gz
-	cargo-$_bootstrap_gitrev-$_ctarget.tar.gz::https://s3.amazonaws.com/rust-lang-ci/cargo-builds/$_bootstrap_gitrev/cargo-nightly-$_ctarget.tar.gz"
+	cargo-$_bootstrap_gitrev-$_ctarget.tar.gz::https://s3.amazonaws.com/rust-lang-ci/cargo-builds/$_bootstrap_gitrev/cargo-nightly-$_ctarget.tar.gz
+	fix-test-build-auth.patch"
 builddir="$srcdir/$pkgname-$pkgver"
 
 _bootstrap_cargo="$srcdir/cargo-nightly-$_ctarget/cargo/bin/cargo"
@@ -102,4 +103,5 @@ _mv() {
 
 sha512sums="5ea9a382ab48ee714b5cd1412f11ae72c6065913e2ce56cf84fe43f9061fd383f32c16a6525e5400f3fec9c10eaa3e7a149b026ae9c64af0955e91678b032650  cargo-0.17.0.tar.gz
 9ceb4755890ad3ae68ce141231c5114077261e0279d3a9a6208053f8d3386c9198e6b94d6321b456648dd5baa86dfc3ae81df44b67d41b428d11afd6763f0cff  rust-installer-4f994850808a572e2cc8d43f968893c8e942e9bf.tar.gz
-4df33353b6be1af822220ca03f9ec5a3b6421c9b10ec17b864be586ba495c6210bac70d904b0e0b35eff62ef2c9a681ded526e5cbd37e326dc3146742aa659de  cargo-6e0c18cccc8b0c06fba8a8d76486f81a792fb420-x86_64-unknown-linux-musl.tar.gz"
+4df33353b6be1af822220ca03f9ec5a3b6421c9b10ec17b864be586ba495c6210bac70d904b0e0b35eff62ef2c9a681ded526e5cbd37e326dc3146742aa659de  cargo-6e0c18cccc8b0c06fba8a8d76486f81a792fb420-x86_64-unknown-linux-musl.tar.gz
+d93f6beeeb6b1207c38ee216f4a9475c7cc5cb11b52e3b52dbd3c4ad4ed5ca19118c1bc4a24c097aaa20e914e1c3d6a972fd438bae2db2d843319915dc4a3609  fix-test-build-auth.patch"
diff --git a/testing/cargo/fix-test-build-auth.patch b/testing/cargo/fix-test-build-auth.patch
new file mode 100644
index 0000000000000000000000000000000000000000..7269f195a653e07e73494c427db1b24b62b27201
--- /dev/null
+++ b/testing/cargo/fix-test-build-auth.patch
@@ -0,0 +1,46 @@
+From: Jakub Jirutka <jakub@jirutka.cz>
+Date: Thu, 13 Aug 2016 14:47:00 +0200
+Subject: [PATCH] Fix test build-auth:http_auth_offered
+
+The test fails because of hard-coded libgit2 version, that may not be
+the same as actually used libgit2...
+
+--- a/tests/build-auth.rs
++++ b/tests/build-auth.rs
+@@ -20,7 +20,7 @@
+     let addr = server.local_addr().unwrap();
+ 
+     fn headers(rdr: &mut BufRead) -> HashSet<String> {
+-        let valid = ["GET", "Authorization", "Accept", "User-Agent"];
++        let valid = ["GET", "Authorization", "Accept"];
+         rdr.lines().map(|s| s.unwrap())
+            .take_while(|s| s.len() > 2)
+            .map(|s| s.trim().to_string())
+@@ -33,11 +33,6 @@
+     let t = thread::spawn(move|| {
+         let mut conn = BufStream::new(server.accept().unwrap().0);
+         let req = headers(&mut conn);
+-        let user_agent = if cfg!(windows) {
+-            "User-Agent: git/1.0 (libgit2 0.25.0)"
+-        } else {
+-            "User-Agent: git/2.0 (libgit2 0.25.0)"
+-        };
+         conn.write_all(b"\
+             HTTP/1.1 401 Unauthorized\r\n\
+             WWW-Authenticate: Basic realm=\"wheee\"\r\n
+@@ -46,7 +41,6 @@
+         assert_eq!(req, vec![
+             "GET /foo/bar/info/refs?service=git-upload-pack HTTP/1.1",
+             "Accept: */*",
+-            user_agent,
+         ].into_iter().map(|s| s.to_string()).collect());
+         drop(conn);
+ 
+@@ -61,7 +55,6 @@
+             "GET /foo/bar/info/refs?service=git-upload-pack HTTP/1.1",
+             "Authorization: Basic Zm9vOmJhcg==",
+             "Accept: */*",
+-            user_agent,
+         ].into_iter().map(|s| s.to_string()).collect());
+     });
+