diff --git a/pkgs/development/libraries/science/math/or-tools/default.nix b/pkgs/development/libraries/science/math/or-tools/default.nix
index 6d23008b6922..92588307ca57 100644
--- a/pkgs/development/libraries/science/math/or-tools/default.nix
+++ b/pkgs/development/libraries/science/math/or-tools/default.nix
@@ -109,7 +109,7 @@ stdenv.mkDerivation rec {
     pip install --prefix="$python" python/
   '';
 
-  outputs = [ "out" "dev" "python" ];
+  outputs = [ "out" "python" ];
 
   meta = with lib; {
     homepage = "https://github.com/google/or-tools";
diff --git a/pkgs/development/python-modules/aioesphomeapi/default.nix b/pkgs/development/python-modules/aioesphomeapi/default.nix
index d9f02f883e34..bee7cc393321 100644
--- a/pkgs/development/python-modules/aioesphomeapi/default.nix
+++ b/pkgs/development/python-modules/aioesphomeapi/default.nix
@@ -28,8 +28,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     async-timeout
     noiseprotocol
-    protobuf.out
-    protobuf.dev
+    protobuf
     zeroconf
   ];
 
diff --git a/pkgs/development/python-modules/protobuf/default.nix b/pkgs/development/python-modules/protobuf/default.nix
index 68177357ca6d..8df8bb7c4a7d 100644
--- a/pkgs/development/python-modules/protobuf/default.nix
+++ b/pkgs/development/python-modules/protobuf/default.nix
@@ -41,8 +41,6 @@ buildPythonPackage {
     fi
   '';
 
-  outputs = [ "out" "dev" ];
-
   buildInputs = [ protobuf ];
 
   propagatedNativeBuildInputs = [