diff --git a/doc/release-notes/rl-2505.section.md b/doc/release-notes/rl-2505.section.md
index c61aabce0ea2..8294606c917f 100644
--- a/doc/release-notes/rl-2505.section.md
+++ b/doc/release-notes/rl-2505.section.md
@@ -57,6 +57,8 @@
 
 - The `electron` packages will now provide their headers (available via `electron.headers`) in extracted form instead of in a tarball.
 
+- The `ephemeral` package was removed due to upstream archival in early 2022.
+
 - [testers.shellcheck](https://nixos.org/manual/nixpkgs/unstable/#tester-shellcheck) now warns when `name` is not provided.
   The `name` argument will become mandatory in a future release.
 
diff --git a/pkgs/by-name/ep/ephemeral/package.nix b/pkgs/by-name/ep/ephemeral/package.nix
deleted file mode 100644
index 2d755b3ee371..000000000000
--- a/pkgs/by-name/ep/ephemeral/package.nix
+++ /dev/null
@@ -1,72 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  nix-update-script,
-  desktop-file-utils,
-  vala,
-  gettext,
-  glib,
-  gtk3,
-  libgee,
-  libdazzle,
-  meson,
-  ninja,
-  pantheon,
-  pkg-config,
-  python3,
-  webkitgtk_4_0,
-  wrapGAppsHook3,
-  glib-networking,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "ephemeral";
-  version = "7.1.0";
-
-  src = fetchFromGitHub {
-    owner = "cassidyjames";
-    repo = "ephemeral";
-    rev = version;
-    sha256 = "sha256-07HO8nC2Pwz2EAea4ZzmqyMfQdgX8FVqDepdA6j/NT8=";
-  };
-
-  nativeBuildInputs = [
-    desktop-file-utils
-    gettext
-    meson
-    ninja
-    vala
-    pkg-config
-    python3
-    wrapGAppsHook3
-  ];
-
-  buildInputs = [
-    glib
-    glib-networking
-    gtk3
-    libdazzle
-    libgee
-    pantheon.granite
-    webkitgtk_4_0
-  ];
-
-  postPatch = ''
-    chmod +x meson/post_install.py
-    patchShebangs meson/post_install.py
-  '';
-
-  passthru = {
-    updateScript = nix-update-script { };
-  };
-
-  meta = with lib; {
-    description = "Always-incognito web browser";
-    homepage = "https://github.com/cassidyjames/ephemeral";
-    maintainers = with maintainers; [ xiorcale ] ++ teams.pantheon.members;
-    platforms = platforms.linux;
-    license = licenses.gpl3;
-    mainProgram = "com.github.cassidyjames.ephemeral";
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 3a7c90d69a3b..5cf54ae01ec2 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -564,6 +564,7 @@ mapAliases {
   EmptyEpsilon = empty-epsilon; # Added 2024-07-14
   enyo-doom = enyo-launcher; # Added 2022-09-09
   epdfview = throw "'epdfview' has been removed due to lack of maintenance upstream. Consider using 'qpdfview' instead"; # Added 2024-10-19
+  ephemeral = throw "'ephemeral' has been archived upstream since 2022-04-02"; # added 2025-04-12
   epoxy = throw "'epoxy' has been renamed to/replaced by 'libepoxy'"; # Converted to throw 2024-10-17
 
   erlang_24 = throw "erlang_24 has been removed as it is unmaintained upstream";