diff --git a/packages/tar-mirage.2.1.99~dev/opam b/packages/tar-mirage.2.1.99~dev/opam
index 1a773c4..8ccae29 100644
--- a/packages/tar-mirage.2.1.99~dev/opam
+++ b/packages/tar-mirage.2.1.99~dev/opam
@@ -46,5 +46,5 @@ build: [
 ]
 dev-repo: "git+https://github.com/mirage/ocaml-tar.git"
 url {
-  src: "git+https://github.com/hannesm/ocaml-tar.git#kv-rw"
+  src: "git+https://github.com/hannesm/ocaml-tar.git#kv-rw-kv-5"
 }
diff --git a/packages/tar.2.1.99~dev/opam b/packages/tar.2.1.99~dev/opam
index 7ff88b4..26a3684 100644
--- a/packages/tar.2.1.99~dev/opam
+++ b/packages/tar.2.1.99~dev/opam
@@ -41,5 +41,5 @@ build: [
 ]
 dev-repo: "git+https://github.com/mirage/ocaml-tar.git"
 url {
-  src: "git+https://github.com/hannesm/ocaml-tar.git#kv-rw"
+  src: "git+https://github.com/hannesm/ocaml-tar.git#kv-rw-kv-5"
 }