diff --git a/pkgs/development/python-modules/coqui-trainer/default.nix b/pkgs/development/python-modules/coqui-trainer/default.nix
index c8bd0d67839e..1a6bf6b2aeb0 100644
--- a/pkgs/development/python-modules/coqui-trainer/default.nix
+++ b/pkgs/development/python-modules/coqui-trainer/default.nix
@@ -30,6 +30,10 @@ buildPythonPackage {
     hash = "sha256-WBFsQuGnpqOiQW7VFfsk0t7qEBs1ScOChfQFpLmqTz4=";
   };
 
+  postPatch = ''
+    sed -i 's/^protobuf.*/protobuf/' requirements.txt
+  '';
+
   propagatedBuildInputs = [
     coqpit
     fsspec