diff --git a/pkgs/development/python-modules/cnvkit/default.nix b/pkgs/development/python-modules/cnvkit/default.nix
index 92af67fa183a..d44e5e8fb71b 100644
--- a/pkgs/development/python-modules/cnvkit/default.nix
+++ b/pkgs/development/python-modules/cnvkit/default.nix
@@ -55,11 +55,6 @@ buildPythonPackage rec {
     rPackages.DNAcopy
   ];
 
-  postPatch = ''
-    substituteInPlace setup.py \
-      --replace "pandas >= 0.20.1, < 0.25.0" "pandas"
-  '';
-
   checkInputs = [ R ];
 
   checkPhase = ''