diff --git a/pkgs/development/python-modules/pybind11-protobuf/default.nix b/pkgs/development/python-modules/pybind11-protobuf/default.nix
index 99dcb8e5bc45..c38601de9b72 100644
--- a/pkgs/development/python-modules/pybind11-protobuf/default.nix
+++ b/pkgs/development/python-modules/pybind11-protobuf/default.nix
@@ -4,7 +4,7 @@
   buildPythonPackage,
   fetchFromGitHub,
   cmake,
-  abseil-cpp,
+  abseil-cpp_202407, # downgrade, same reason as toplevel protobuf_29
   protobuf_29,
   pybind11,
   zlib,
@@ -31,7 +31,7 @@ buildPythonPackage {
   nativeBuildInputs = [ cmake ];
 
   buildInputs = [
-    abseil-cpp
+    abseil-cpp_202407
     protobuf_29
     pybind11
     zlib