diff --git a/README.md b/README.md
index 6751b5775ac4f29027bfdc2b73c04067e1db0be8..528ff005f10f5d936c6cbbe81f1cd93b233a24f5 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,7 @@ phones. The benchmark results can be found in [the CI result page](https://gitla
 
 ## Communication
 * GitHub issues: bug reports, usage issues, feature requests
+* Slack: [mace-users.slack.com](https://join.slack.com/t/mace-users/shared_invite/enQtMzkzNjM3MzMxODYwLTAyZTAzMzQyNjc0ZGI5YjU3MjI1N2Q2OWI1ODgwZjAwOWVlNzFlMjFmMTgwYzhjNzU4MDMwZWQ1MjhiM2Y4OTE)
 * Mailing list: [mace-users@googlegroups.com](mailto:mace-users@googlegroups.com)
 * Google Groups: https://groups.google.com/forum/#!forum/mace-users
 * QQ群: 756046893
diff --git a/README_zh.md b/README_zh.md
index a49789f4cad2822f956abc1774297fbe9af6f94e..5d99284dc4ec7b830a25eed3306da701dfd34c71 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -48,6 +48,7 @@
 * 欢迎通过Github Issues提交问题报告与建议
 * 邮件列表: [mace-users@googlegroups.com](mailto:mace-users@googlegroups.com)
 * QQ群: 756046893
+* Slack: [mace-users.slack.com](https://join.slack.com/t/mace-users/shared_invite/enQtMzkzNjM3MzMxODYwLTAyZTAzMzQyNjc0ZGI5YjU3MjI1N2Q2OWI1ODgwZjAwOWVlNzFlMjFmMTgwYzhjNzU4MDMwZWQ1MjhiM2Y4OTE)
 
 ## License
 [Apache License 2.0](LICENSE).