diff --git a/pkgs/development/python-modules/pyorc/default.nix b/pkgs/development/python-modules/pyorc/default.nix
index eeb3f9917c90..eaaa94f6a7cf 100644
--- a/pkgs/development/python-modules/pyorc/default.nix
+++ b/pkgs/development/python-modules/pyorc/default.nix
@@ -33,7 +33,7 @@ buildPythonPackage rec {
 
   buildInputs = [
     pkgs.lz4
-    pkgs.protobuf
+    pkgs.protobuf_31
     pkgs.snappy
     pkgs.zlib
     pkgs.zstd