Synchronize submodules
diff --git a/third_party/tensorflow b/third_party/tensorflow
index d04bf99..2c4a014 160000
--- a/third_party/tensorflow
+++ b/third_party/tensorflow
@@ -1 +1 @@
-Subproject commit d04bf998887fffe640ec8cacc9094574cd596f99
+Subproject commit 2c4a0140f62e021bb596c11a3b306eb94e481d85