diff --git a/pkgs/by-name/di/diffoscope/package.nix b/pkgs/by-name/di/diffoscope/package.nix
index 20e30df4e5ea..a9901d63de22 100644
--- a/pkgs/by-name/di/diffoscope/package.nix
+++ b/pkgs/by-name/di/diffoscope/package.nix
@@ -202,7 +202,7 @@ python.pkgs.buildPythonApplication rec {
       jsbeautifier
       jsondiff
       libarchive-c
-      progressbar33
+      progressbar
       pypdf
       python-magic
       pyxattr