diff --git a/pkgs/development/python-modules/polars/default.nix b/pkgs/development/python-modules/polars/default.nix
index d967ca27c8ff..9a9bc9f3ead4 100644
--- a/pkgs/development/python-modules/polars/default.nix
+++ b/pkgs/development/python-modules/polars/default.nix
@@ -13,7 +13,7 @@
 }:
 let
   pname = "polars";
-  version = "0.20.0";
+  version = "0.19.12";
   rootSource = fetchFromGitHub {
     owner = "pola-rs";
     repo = "polars";