diff --git a/tests/input/test_custom_coordinate_release.yml b/tests/input/test_custom_coordinate_release.yml
new file mode 100644
index 000000000..ba017ed5d
--- /dev/null
+++ b/tests/input/test_custom_coordinate_release.yml
@@ -0,0 +1,26 @@
+parcel:
+  numpy1: 1.0.0
+  numpy2: 2.0.0
+letter:
+  py38:
+    numpy1: 1.38.0
+    numpy2: 2.28.0
+  py311:
+    numpy1: 1.311.0
+    numpy2: 2.211.0
+box:
+  rhel8:
+    py38:
+      numpy1: 1.38.8
+      numpy2: 2.28.8
+    py311:
+      numpy1: 1.311.8
+      numpy2: 2.211.8
+  rhel9:
+    py38:
+      numpy1: 1.38.9
+      numpy2: 2.28.9
+    py311:
+      numpy1: 1.311.9
+      numpy2: 2.211.9
+case: 0.0.1
\ No newline at end of file
diff --git a/tests/test_release_transpiler.py b/tests/test_release_transpiler.py
index a59af1437..bcc1635f4 100644
--- a/tests/test_release_transpiler.py
+++ b/tests/test_release_transpiler.py
@@ -1,6 +1,8 @@
 import os
+from contextlib import contextmanager
 
 import pytest
+import yaml
 
 from komodo.release_transpiler import (
     transpile_releases,
@@ -8,6 +10,9 @@
 )
 from tests import _get_test_root
 
+@contextmanager
+def does_not_raise():
+    yield
 
 @pytest.mark.parametrize(
     "matrix",
@@ -29,6 +34,42 @@ def test_transpile_add_argument(tmpdir, matrix):
                     f"{release_base}-{py_coordinate_filename_format}-{rhel_coordinate_filename_format}.yml"
                 )
 
+@pytest.mark.parametrize(
+    ("matrix", "expectation"),
+    [
+        ({"py": ["3.8"], "rhel": ["8"], "numpy": ["1"]}, does_not_raise()),
+        ({"py": ["3.11"], "rhel": ["9"], "numpy": ["2"]}, does_not_raise()),
+        ({"py": ["3.8", "3.11"], "rhel": ["8", "9"], "numpy": ["1", "2"]}, does_not_raise()),
+        ({"py": ["3.8", "3.11"], "rhel": ["8", "9"]}, pytest.raises(KeyError)),
+        ({"py": ["3.8", "3.11"], "rhel": ["8", "9"], "numpy": ["3"]}, pytest.raises(KeyError)),
+    ],
+)
+def test_transpile_custom_coordinate_releases(tmpdir, matrix, expectation):
+    release_file = os.path.join(_get_test_root(), "input", "test_custom_coordinate_release.yml")
+    release_base = os.path.basename(release_file).strip(".yml")
+
+    packages = ["parcel", "letter", "box", "case"]
+    keywords = ["rhel", "py", "numpy"]
+
+    with tmpdir.as_cwd():
+        with expectation:
+            transpile_releases(release_file, os.getcwd(), matrix)
+
+            for rhel_coordinate in matrix["rhel"]:
+                rhel_coordinate_filename_format = f"rhel{rhel_coordinate}"
+                for py_coordinate in matrix["py"]:
+                    py_coordinate_filename_format = f"py{py_coordinate.replace('.', '')}"
+                    for custom_coordinate in matrix["numpy"]:
+                        custom_coordinate_filename_format = f"numpy{custom_coordinate}"
+
+                        release_file = f"{release_base}-{py_coordinate_filename_format}-{rhel_coordinate_filename_format}-{custom_coordinate_filename_format}.yml"
+                        assert os.path.isfile(release_file)
+                        content = yaml.safe_load(open(release_file))
+
+                        for p in packages:
+                            assert p in content
+                        for k in keywords:
+                            assert k not in content
 
 @pytest.mark.parametrize(
     ("matrix", "error_message_content"),