diff --git a/pkgs/development/libraries/alembic/default.nix b/pkgs/development/libraries/alembic/default.nix
index efe5a38c6263..103b480b5899 100644
--- a/pkgs/development/libraries/alembic/default.nix
+++ b/pkgs/development/libraries/alembic/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec
     owner = "alembic";
     repo = "alembic";
     rev = version;
-    sha256 = "sha256-PuVN5Ytls58G2BmwCHUHiMQ0rolH98Hlw/pp7cvpiAg=";
+    hash = "sha256-EJZvbaGP9aea/UvcXmFbI3Y2/xTkdqORdzyz5ch931A=";
   };
 
   # note: out is unused (but required for outputDoc anyway)