diff --git a/pkgs/by-name/et/eta/package.nix b/pkgs/by-name/et/eta/package.nix
index a0ba3a682422..5154b4feb65c 100644
--- a/pkgs/by-name/et/eta/package.nix
+++ b/pkgs/by-name/et/eta/package.nix
@@ -6,13 +6,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "eta";
-  version = "1.0.1";
+  version = "1.0.1-unstable-2026-01-04";
 
   src = fetchFromGitHub {
     owner = "aioobe";
     repo = "eta";
-    rev = "v${finalAttrs.version}";
-    hash = "sha256-UQ8ZoxFAy5dKtXTLwPolPMd7YJeEjsK639RkGCMY6rU=";
+    rev = "7027a4012e7c697be1c9af1a9f21bfae1bd4913b";
+    hash = "sha256-18TOXDohyRGA0pmRyWgR9EPhKgZt+ZtkuTCFWbSnFlY=";
   };
 
   outputs = [