diff --git a/appengine/flexible/numpy/requirements.txt b/appengine/flexible/numpy/requirements.txt
index d624e94a947..f169963f544 100644
--- a/appengine/flexible/numpy/requirements.txt
+++ b/appengine/flexible/numpy/requirements.txt
@@ -1,3 +1,3 @@
 Flask==0.11.1
 gunicorn==19.6.0
-numpy==1.12.0b1
+numpy==1.12.0rc1
diff --git a/appengine/flexible/scipy/requirements.txt b/appengine/flexible/scipy/requirements.txt
index 86a005af838..adb46bd50da 100644
--- a/appengine/flexible/scipy/requirements.txt
+++ b/appengine/flexible/scipy/requirements.txt
@@ -1,5 +1,5 @@
 Flask==0.11.1
 gunicorn==19.6.0
-numpy==1.12.0b1
+numpy==1.12.0rc1
 scipy==0.18.1
 Pillow==3.4.2