diff --git a/pkgs/colcon/core.nix b/pkgs/colcon/core.nix
index a308b019a3..b5495a2da1 100644
--- a/pkgs/colcon/core.nix
+++ b/pkgs/colcon/core.nix
@@ -29,11 +29,11 @@ let
 
   package = buildPythonPackage rec {
     pname = "colcon-core";
-    version = "0.18.3";
+    version = "0.18.4";
 
     src = fetchPypi {
       inherit pname version;
-      hash = "sha256-iz3PCxQLKFGpFpxgs+0sp4puSP7I7Oze76KHpnFfLhc=";
+      hash = "sha256-Oewm3WbVxppfQDEjnJMlgGn2H6Pfb4h0SjcAc9JpGh0=";
     };
 
     propagatedBuildInputs = [