diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 70ed8297ff1f..ad065148f74a 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2991,7 +2991,7 @@ in {
       description = "Generate block-diagram image from spec-text file (similar to Graphviz)";
       homepage = http://blockdiag.com/;
       license = licenses.asl20;
-      platforms = platforms.linux;
+      platforms = platforms.unix;
       maintainers = with maintainers; [ bjornfor ];
     };
   };