More precise TensorFlow versions requirement
@@ -13,8 +13,9 @@ It focuses on modularity and extensibility using standard TensorFlow modules and
## Requirements
* `tensorflow`
- * `nightly` to use `CharConvEmbedder` or `crf_decoding=True`
- * `1.3.0` otherwise
+ * >= [`4da840dd`](https://github.com/tensorflow/tensorflow/commit/4da840dd946da3d253ee88e1757ba8a0c0f130f0) to use `crf_decoding=True`
+ * >= [`865b92da`](https://github.com/tensorflow/tensorflow/commit/865b92da01582081576728504bedf932b367b26c) to use `CharConvEmbedder`
+ * >= `1.3.0` otherwise
* `pyyaml`
## Overview
