diff --git a/speech/microphone/noxfile.py b/speech/microphone/noxfile.py
index 5fcb9d7461f2..0398d72ff690 100644
--- a/speech/microphone/noxfile.py
+++ b/speech/microphone/noxfile.py
@@ -207,8 +207,8 @@ def _session_tests(
     session: nox.sessions.Session, post_install: Callable = None
 ) -> None:
     # check for presence of tests
-    test_list = glob.glob("*_test.py") + glob.glob("test_*.py")
-    test_list.extend(glob.glob("tests"))
+    test_list = glob.glob("**/*_test.py", recursive=True) + glob.glob("**/test_*.py", recursive=True)
+    test_list.extend(glob.glob("**/tests", recursive=True))
 
     if len(test_list) == 0:
         print("No tests found, skipping directory.")
diff --git a/speech/snippets/noxfile.py b/speech/snippets/noxfile.py
index 5fcb9d7461f2..0398d72ff690 100644
--- a/speech/snippets/noxfile.py
+++ b/speech/snippets/noxfile.py
@@ -207,8 +207,8 @@ def _session_tests(
     session: nox.sessions.Session, post_install: Callable = None
 ) -> None:
     # check for presence of tests
-    test_list = glob.glob("*_test.py") + glob.glob("test_*.py")
-    test_list.extend(glob.glob("tests"))
+    test_list = glob.glob("**/*_test.py", recursive=True) + glob.glob("**/test_*.py", recursive=True)
+    test_list.extend(glob.glob("**/tests", recursive=True))
 
     if len(test_list) == 0:
         print("No tests found, skipping directory.")