diff --git a/README.md b/README.md
index 0545347fb..6cfeb505b 100644
--- a/README.md
+++ b/README.md
@@ -37,10 +37,10 @@ The required third-party packages are available in great part of package managem
 Take `Debian/Ubuntu` system for example, you could run the following commands:
 
 ``` bash
-sudo apt-get install libcurl4-openssl-dev libboost-all-dev libssl-dev libcpprest-dev
+sudo apt-get install libcurl4-openssl-dev libboost-all-dev libssl-dev libcpprest-dev libspdlog-dev
 ```
 
-`spdlog` is able to installed by source code only:
+`spdlog`(`libspdlog-dev`) is able to installed by source code only on old distributions:
 
 ``` bash
 git clone https://github.com/gabime/spdlog.git
diff --git a/README_CN.md b/README_CN.md
index febe7f079..881f9c003 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -37,10 +37,10 @@
 例如基于 Debian/Ubuntu 的系统
 
 ``` bash
-sudo apt-get install libcurl4-openssl-dev libboost-all-dev libssl-dev libcpprest-dev
+sudo apt-get install libcurl4-openssl-dev libboost-all-dev libssl-dev libcpprest-dev libspdlog-dev
 ```
 
-spdlog 需要从源码进行安装
+spdlog (libspdlog-dev) 在较旧的发行版上需要从源码进行安装
 
 ``` bash
 git clone https://github.com/gabime/spdlog.git