diff --git a/pkgs/default.nix b/pkgs/default.nix
index 47ad695b01..e74c089cd4 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -119,7 +119,6 @@ in {
 
     tools = self.callPackage ./ignition/tools { };
 
-    transport4 = self.callPackage ./ignition/transport/4.nix { };
     transport8 = self.callPackage ./ignition/transport/8.nix { };
     transport11 = self.callPackage ./ignition/transport { };
     transport = self.ignition.transport11;
diff --git a/pkgs/ignition/transport/4.nix b/pkgs/ignition/transport/4.nix
deleted file mode 100644
index ceb16159aa..0000000000
--- a/pkgs/ignition/transport/4.nix
+++ /dev/null
@@ -1,10 +0,0 @@
-{ callPackage, ignition, ... } @ args :
-
-callPackage ./. ({
-  majorVersion = "4";
-  version = "4.0.0";
-  srcHash = "sha256-QS53R6N2hghbbmj8lk7P6S8255n4LkEn9ra+wA4XBSM=";
-  ignition-cmake = ignition.cmake0;
-  ignition-math = ignition.math4;
-  ignition-msgs = ignition.msgs1;
-} // args)
diff --git a/pkgs/ignition/transport/default.nix b/pkgs/ignition/transport/default.nix
index 0ec33127df..f799712adf 100644
--- a/pkgs/ignition/transport/default.nix
+++ b/pkgs/ignition/transport/default.nix
@@ -28,8 +28,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
   propagatedNativeBuildInputs = [ ignition-cmake ];
-  buildInputs = [ ignition-math sqlite libsodium ]
-    ++ lib.optional (lib.versionAtLeast version "5") ignition-utils;
+  buildInputs = [ ignition-math sqlite libsodium ignition-utils ];
   propagatedBuildInputs = [ protobuf cppzmq zeromq libuuid ignition-msgs ];
 
   meta = with lib; {