diff -Nru rust-auth-git2-0.6.0/debian/changelog rust-auth-git2-0.6.0/debian/changelog
--- rust-auth-git2-0.6.0/debian/changelog	2026-07-10 13:31:32.000000000 -0500
+++ rust-auth-git2-0.6.0/debian/changelog	2026-08-08 16:20:13.000000000 -0500
@@ -1,3 +1,10 @@
+rust-auth-git2 (0.6.0-1.1) unstable; urgency=medium
+
+  * Non-maintainer upload.
+  * Build-Depend/Depend on git2 0.21, add git2-0.21.patch.
+
+ -- Simon Quigley <tsimonq2@debian.org>  Sat, 08 Aug 2026 16:20:13 -0500
+
 rust-auth-git2 (0.6.0-1) sid; urgency=medium
 
   * Merging upstream version 0.6.0.
diff -Nru rust-auth-git2-0.6.0/debian/control rust-auth-git2-0.6.0/debian/control
--- rust-auth-git2-0.6.0/debian/control	2026-07-10 13:31:32.000000000 -0500
+++ rust-auth-git2-0.6.0/debian/control	2026-08-08 16:18:10.000000000 -0500
@@ -9,7 +9,7 @@
 Build-Depends-Arch:
  cargo:native <!nocheck>,
  librust-dirs-6+default-dev <!nocheck>,
- librust-git2-0.20+default-dev <!nocheck>,
+ librust-git2-0.21+default-dev <!nocheck>,
  librust-terminal-prompt-0.2+default-dev (>= 0.2.2) <!nocheck>,
  libstd-rust-dev <!nocheck>,
  rustc:native <!nocheck>,
@@ -25,7 +25,7 @@
 Multi-Arch: same
 Depends:
  librust-dirs-6+default-dev,
- librust-git2-0.20+default-dev,
+ librust-git2-0.21+default-dev,
  librust-log-0.4+default-dev (>= 0.4.19),
  librust-terminal-prompt-0.2+default-dev (>= 0.2.2),
  ${misc:Depends},
diff -Nru rust-auth-git2-0.6.0/debian/patches/git2-0.21.patch rust-auth-git2-0.6.0/debian/patches/git2-0.21.patch
--- rust-auth-git2-0.6.0/debian/patches/git2-0.21.patch	1969-12-31 18:00:00.000000000 -0600
+++ rust-auth-git2-0.6.0/debian/patches/git2-0.21.patch	2026-08-08 16:20:13.000000000 -0500
@@ -0,0 +1,24 @@
+Description: Port to git2 0.21
+Author: Simon Quigley <tsimonq2@debian.org>
+Origin: vendor
+Forwarded: not-needed
+Last-Update: 2026-08-08
+---
+This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
+--- a/Cargo.toml
++++ b/Cargo.toml
+@@ -56,6 +56,7 @@ version = "6.0.0"
+ [dependencies.git2]
+ version = ">= 0.20, < 0.22"
+ default-features = false
++features = ["cred"]
+ 
+ [dependencies.log]
+ version = "0.4.19"
+@@ -75,5 +76,5 @@ features = ["derive"]
+ version = "0.11.6"
+ 
+ [dev-dependencies.git2]
+-version = ">=0.14, <22.0"
++version = ">=0.14, <0.22"
+ features = ["cred"]
diff -Nru rust-auth-git2-0.6.0/debian/patches/series rust-auth-git2-0.6.0/debian/patches/series
--- rust-auth-git2-0.6.0/debian/patches/series	2026-07-10 13:31:32.000000000 -0500
+++ rust-auth-git2-0.6.0/debian/patches/series	2026-08-08 16:20:08.000000000 -0500
@@ -1 +1,2 @@
 debian/0001-cargo.toml
+git2-0.21.patch