diff --git a/test/diff/generate.py b/test/diff/generate.py
index 0a02441e5..16d935b12 100644
--- a/test/diff/generate.py
+++ b/test/diff/generate.py
@@ -204,7 +204,7 @@ def exec_on_repo(args, repo):
         for cmd in cmds:
             new_cmd = list(cmd.split(" "))
             commands.append(f"{list2cmdline(new_cmd)}")
-    if repo["language"] == "python":
+    if "python" in repo["language"]:
         commands.append(create_python_venvs(repo, args.uv_location))
     elif args.build and repo["build_cmd"]:
         cmds = repo["build_cmd"].split(";")
@@ -411,19 +411,32 @@ def run_cdxgen(repo, output_dir):
     Returns:
         str: The repository data with cdxgen commands
     """
-    cdxgen_cmd = [
-        'cdxgen',
-        "--no-include-formulation",
-        '-t',
-        repo['language'],
-        '-o',
-        Path.joinpath(output_dir, f'{repo["project"]}-bom.json'),
-        repo['repo_dir']
-    ]
+    if repo["language"] == "python-c":
+        cdxgen_cmd = [
+            "cdxgen",
+            "--no-include-formulation",
+            "-t",
+            "python",
+            "-t",
+            "c",
+            "-o",
+            Path.joinpath(output_dir, f"{repo['project']}-bom.json"),
+            repo["repo_dir"]
+        ]
+    else:
+        cdxgen_cmd = [
+            "cdxgen",
+            "--no-include-formulation",
+            "-t",
+            repo['language'],
+            "-o",
+            Path.joinpath(output_dir, f"{repo['project']}-bom.json"),
+            repo["repo_dir"]
+        ]
     cmd = f"CDXGEN_DEBUG_MODE=debug {list2cmdline(cdxgen_cmd)}"
     if repo["cdxgen_vars"]:
         cmd = f"{repo['cdxgen_vars']} {cmd}"
-    if repo["language"] == "python":
+    if "python" in repo["language"]:
         if repo["package_manager"] == "poetry":
             cmd = f"VIRTUAL_ENV=$(poetry env list --full-path | grep -E -o '(/\S+)+/pypoetry/virtualenvs/\S+') {cmd}"
         else:
diff --git a/test/diff/repos.csv b/test/diff/repos.csv
index 4bbab9c9d..88b8fe20a 100644
--- a/test/diff/repos.csv
+++ b/test/diff/repos.csv
@@ -11,5 +11,5 @@ plantuml_17,https://github.com/plantuml/plantuml.git,java17,17,,gradle,,,gradle
 jazzer,https://github.com/CodeIntelligenceTesting/jazzer.git,java8,8,,bazelisk,7.3.0,sdk use java 8.0.432-tem,bazelisk build //:jazzer_release,BAZEL_CMD='bazelisk' BAZEL_TARGET=//:jazzer_release,3947707d7db7e5cae0c8cfaeb10bdfeb06fc32bb
 tinydb,https://github.com/msiemens/tinydb.git,python,"3.9.20,3.10.15,3.11.10,3.12.7","pyproject.toml,poetry.lock",poetry,,,poetry install,,10644a0e07ad180c5b756aba272ee6b0dbd12df8
 funcy,https://github.com/Suor/funcy.git,python,"3.9.20,3.10.15",setup.py,pip,,rm test_requirements.txt,python setup.py install,,859056d039adea75c1c3550286437ce0b612fe92
-numpy,https://github.com/numpy/numpy.git,"python,c","3.9.20,3.10.15,3.11.10,3.12.7","setup.py,pyproject.toml",pip,,git submodule update --init,pip install .,,93fdebfcb4bc4cd53c959ccd0117a612d5f13f1a
+numpy,https://github.com/numpy/numpy.git,python-c,"3.9.20,3.10.15,3.11.10,3.12.7","setup.py,pyproject.toml",pip,,git submodule update --init,pip install .,,93fdebfcb4bc4cd53c959ccd0117a612d5f13f1a
 requests,https://github.com/psf/requests.git,python,"3.9.20,3.10.15,3.11.10,3.12.7","setup.py",,,,pip install .,,23540c93cac97c763fe59e843a08fa2825aa80fd
\ No newline at end of file