diff --git a/src/otk_external_osbuild/command/gen_depsolve_dnf4.py b/src/otk_external_osbuild/command/gen_depsolve_dnf4.py
index 5ae734f1..1aa6d0eb 100644
--- a/src/otk_external_osbuild/command/gen_depsolve_dnf4.py
+++ b/src/otk_external_osbuild/command/gen_depsolve_dnf4.py
@@ -34,7 +34,7 @@ def mockdata(packages):
             "release": "0",
             "arch": "noarch",
         }
-        for p in packages
+        for p in packages["include"] + [f"exclude:{p}" for p in packages["exclude"]]
     ]
 
 
@@ -42,7 +42,7 @@ def root(input_stream: TextIO) -> None:
     data = json.loads(input_stream.read())
     tree = data["tree"]
     if "OTK_UNDER_TEST" in os.environ:
-        packages = mockdata(tree["packages"]["include"])
+        packages = mockdata(tree["packages"])
         sys.stdout.write(json.dumps(transform(packages)))
         return
 
diff --git a/test/test_gen_depsolve_dnf4.py b/test/test_gen_depsolve_dnf4.py
index b421747f..1bea6e88 100644
--- a/test/test_gen_depsolve_dnf4.py
+++ b/test/test_gen_depsolve_dnf4.py
@@ -42,6 +42,14 @@ def test_gen_depsolve_dnf4_under_test_mock_data(monkeypatch, capsys):
                             "release": "0",
                             "arch": "noarch",
                             "epoch": "",
+                        }, {
+                            "arch": "noarch",
+                            "checksum": "sha256:93941c24b2276b2050d001b61bab64c58a8df5242bf491fa888f061cca12b51a",
+                            "epoch": "",
+                            "name": "exclude:not-pkg2",
+                            "release": "0",
+                            "remote_location": "https://example.com/repo/packages/exclude:not-pkg2",
+                            "version": "0",
                         },
                     ],
                 },