diff --git a/tensorflow/tools/pip_package/setup.py b/tensorflow/tools/pip_package/setup.py
index bb1a49841a8265..79ddc1030710be 100644
--- a/tensorflow/tools/pip_package/setup.py
+++ b/tensorflow/tools/pip_package/setup.py
@@ -119,7 +119,7 @@
     if 'tensorboard' in pkg:
       REQUIRED_PACKAGES[i] = 'tb-nightly ~= 2.6.0.a'
     elif 'tensorflow_estimator' in pkg:
-      REQUIRED_PACKAGES[i] = 'tf-estimator-nightly ~= 2.5.0.dev'
+      REQUIRED_PACKAGES[i] = 'tf-estimator-nightly ~= 2.6.0.dev'
     elif 'keras' in pkg and 'keras_preprocessing' not in pkg:
       REQUIRED_PACKAGES[i] = 'keras-nightly ~= 2.6.0.dev'