diff --git a/pkgs/tools/misc/diffoscope/default.nix b/pkgs/tools/misc/diffoscope/default.nix
index 4e4e0c27d14..b4272dac531 100644
--- a/pkgs/tools/misc/diffoscope/default.nix
+++ b/pkgs/tools/misc/diffoscope/default.nix
@@ -43,6 +43,7 @@ python3Packages.buildPythonApplication rec {
     ] ++ lib.optionals enableBloat [
       apktool cbfstool colord fpc ghc ghostscriptX giflib gnupg1 gnumeric imagemagick
       llvm jdk mono openssh pdftk poppler_utils tcpdump unoconv
+      python3Packages.guestfs
     ];
 
   doCheck = false; # Calls 'mknod' in squashfs tests, which needs root