diff --git a/pkgs/by-name/ec/eclib/package.nix b/pkgs/by-name/ec/eclib/package.nix
index 0c886a265b63..8eb4a1f0bab0 100644
--- a/pkgs/by-name/ec/eclib/package.nix
+++ b/pkgs/by-name/ec/eclib/package.nix
@@ -14,7 +14,7 @@ assert withFlint -> flint != null;
 
 stdenv.mkDerivation rec {
   pname = "eclib";
-  version = "20240408"; # upgrade might break the sage interface
+  version = "20250122"; # upgrade might break the sage interface
   # sage tests to run:
   # src/sage/interfaces/mwrank.py
   # src/sage/libs/eclib
@@ -28,8 +28,8 @@ stdenv.mkDerivation rec {
     #
     # see https://github.com/JohnCremona/eclib/issues/64#issuecomment-789788561
     # for upstream's explanation of the above
-    url = "https://github.com/JohnCremona/eclib/releases/download/v${version}/eclib-${version}.tar.bz2";
-    sha256 = "sha256-O6kI4gGd5T/LoUFEnKpvqC8DYFv4O/nagJLfU4ravnw=";
+    url = "https://github.com/JohnCremona/eclib/releases/download/${version}/eclib-${version}.tar.bz2";
+    sha256 = "sha256-n4wrMuJKTyDXzC0zbqMMjqA7WwlTwtMq3aDEludhaJk=";
   };
   buildInputs = [
     pari