diff --git a/packages/tag-release.nix b/packages/tag-release.nix
index 410be9e9..288618e9 100644
--- a/packages/tag-release.nix
+++ b/packages/tag-release.nix
@@ -7,8 +7,12 @@ writeShellApplication {
 
   text = ''
     commit_sha="''${1:-HEAD}"
+    prefix="''${2:-}"
+
     tag="$(date '+%Y%m%d%R%S' | sed "s/://g")"
 
+    test "$prefix" != "" && tag="$prefix/$tag"
+
     echo "Tagging commit $(git rev-parse "''${commit_sha}") as ''${tag}."
     echo ""