diff --git a/google-cloud-speech/nox.py b/google-cloud-speech/nox.py
index b44e944c4d89..739b71bb23c1 100644
--- a/google-cloud-speech/nox.py
+++ b/google-cloud-speech/nox.py
@@ -19,7 +19,10 @@
 import nox
 
 
-LOCAL_DEPS = ('../core/',)
+LOCAL_DEPS = (
+    os.path.join('..', 'api_core'),
+    os.path.join('..', 'core'),
+)
 
 
 @nox.session