diff --git a/docs/ikev2-howto-zh.md b/docs/ikev2-howto-zh.md
index f8de54d..b5ada2f 100644
--- a/docs/ikev2-howto-zh.md
+++ b/docs/ikev2-howto-zh.md
@@ -771,13 +771,13 @@ Ubuntu 18.04 上的 NSS 问题的解决方法
 首先安装更新版本的 `libnss3` 相关的软件包：
 
 ```
-wget https://mirrors.kernel.org/ubuntu/pool/main/n/nss/libnss3_3.49.1-1ubuntu1.5_amd64.deb
-wget https://mirrors.kernel.org/ubuntu/pool/main/n/nss/libnss3-dev_3.49.1-1ubuntu1.5_amd64.deb
-wget https://mirrors.kernel.org/ubuntu/pool/universe/n/nss/libnss3-tools_3.49.1-1ubuntu1.5_amd64.deb
+wget https://mirrors.kernel.org/ubuntu/pool/main/n/nss/libnss3_3.49.1-1ubuntu1.6_amd64.deb
+wget https://mirrors.kernel.org/ubuntu/pool/main/n/nss/libnss3-dev_3.49.1-1ubuntu1.6_amd64.deb
+wget https://mirrors.kernel.org/ubuntu/pool/universe/n/nss/libnss3-tools_3.49.1-1ubuntu1.6_amd64.deb
 apt-get -y update
-apt-get -y install "./libnss3_3.49.1-1ubuntu1.5_amd64.deb" \
- "./libnss3-dev_3.49.1-1ubuntu1.5_amd64.deb" \
- "./libnss3-tools_3.49.1-1ubuntu1.5_amd64.deb"
+apt-get -y install "./libnss3_3.49.1-1ubuntu1.6_amd64.deb" \
+ "./libnss3-dev_3.49.1-1ubuntu1.6_amd64.deb" \
+ "./libnss3-tools_3.49.1-1ubuntu1.6_amd64.deb"
 ```
 
 然后重新 [导出 IKEv2 客户端的配置](#导出已有的客户端的配置)。
diff --git a/docs/ikev2-howto.md b/docs/ikev2-howto.md
index ff3c9e7..48fecf5 100644
--- a/docs/ikev2-howto.md
+++ b/docs/ikev2-howto.md
@@ -773,13 +773,13 @@ Workaround for the NSS bug on Ubuntu 18.04
 First, install newer versions of `libnss3` related packages:
 
 ```
-wget https://mirrors.kernel.org/ubuntu/pool/main/n/nss/libnss3_3.49.1-1ubuntu1.5_amd64.deb
-wget https://mirrors.kernel.org/ubuntu/pool/main/n/nss/libnss3-dev_3.49.1-1ubuntu1.5_amd64.deb
-wget https://mirrors.kernel.org/ubuntu/pool/universe/n/nss/libnss3-tools_3.49.1-1ubuntu1.5_amd64.deb
+wget https://mirrors.kernel.org/ubuntu/pool/main/n/nss/libnss3_3.49.1-1ubuntu1.6_amd64.deb
+wget https://mirrors.kernel.org/ubuntu/pool/main/n/nss/libnss3-dev_3.49.1-1ubuntu1.6_amd64.deb
+wget https://mirrors.kernel.org/ubuntu/pool/universe/n/nss/libnss3-tools_3.49.1-1ubuntu1.6_amd64.deb
 apt-get -y update
-apt-get -y install "./libnss3_3.49.1-1ubuntu1.5_amd64.deb" \
- "./libnss3-dev_3.49.1-1ubuntu1.5_amd64.deb" \
- "./libnss3-tools_3.49.1-1ubuntu1.5_amd64.deb"
+apt-get -y install "./libnss3_3.49.1-1ubuntu1.6_amd64.deb" \
+ "./libnss3-dev_3.49.1-1ubuntu1.6_amd64.deb" \
+ "./libnss3-tools_3.49.1-1ubuntu1.6_amd64.deb"
 ```
 
 After that, [export configuration for the IKEv2 client](#export-configuration-for-an-existing-client) again.