diff --git a/README.md b/README.md
index c9db143..0a5cde1 100644
--- a/README.md
+++ b/README.md
@@ -253,7 +253,7 @@ Pre-built binaries for Linux, MacOS, and Windows can be found on [the releases p
 You can use the following command on Linux, MacOS, or Windows to download the latest release, just replace `DEST` with the directory where you'd like to put `just`:
 
 ```sh
-curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -- --to DEST
+curl --proto '=https' --tlsv1.3 -sSf https://just.systems/install.sh | bash -s -- --to DEST
 ```
 
 For example, to install `just` to `~/bin`:
@@ -263,7 +263,7 @@ For example, to install `just` to `~/bin`:
 mkdir -p ~/bin
 
 # download and extract just to ~/bin/just
-curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -- --to ~/bin
+curl --proto '=https' --tlsv1.3 -sSf https://just.systems/install.sh | bash -s -- --to ~/bin
 
 # add `~/bin` to the paths that your shell searches for executables
 # this line should be added to your shells initialization file,
diff --git a/README.中文.md b/README.中文.md
index 37b005b..54ed0f0 100644
--- a/README.中文.md
+++ b/README.中文.md
@@ -251,7 +251,7 @@ Linux、MacOS 和 Windows 的预制二进制文件可以在 [发布页](https://
 你也可以在 Linux、MacOS 或 Windows 上使用下面的命令来下载最新的版本，只需将 `DEST` 替换为你想安装 `just` 的目录即可：
 
 ```sh
-curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -- --to DEST
+curl --proto '=https' --tlsv1.3 -sSf https://just.systems/install.sh | bash -s -- --to DEST
 ```
 
 例如，安装 `just` 到 `~/bin` 目录：
@@ -261,7 +261,7 @@ curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -
 mkdir -p ~/bin
 
 # 下载并解压 just 到 ~/bin/just
-curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -- --to ~/bin
+curl --proto '=https' --tlsv1.3 -sSf https://just.systems/install.sh | bash -s -- --to ~/bin
 
 # 在 Shell 搜索可执行文件的路径中添加`~/bin`
 # 这一行应该被添加到你的 Shell 初始化文件中，e.g. `~/.bashrc` 或者 `~/.zshrc`：
diff --git a/www/install.sh b/www/install.sh
index bfda6ba..49c7113 100755
--- a/www/install.sh
+++ b/www/install.sh
@@ -102,7 +102,7 @@ if [ -z ${dest-} ]; then
 fi
 
 if [ -z ${tag-} ]; then
-  tag=$(curl --proto =https --tlsv1.2 -sSf https://api.github.com/repos/casey/just/releases/latest |
+  tag=$(curl --proto =https --tlsv1.3 -sSf https://api.github.com/repos/casey/just/releases/latest |
     grep tag_name |
     cut -d'"' -f4
   )
@@ -147,10 +147,10 @@ td=$(mktemp -d || mktemp -d -t tmp)
 
 if [ "$extension" = "zip" ]; then
     # unzip on windows cannot always handle stdin, so download first.
-    curl --proto =https --tlsv1.2 -sSfL $archive > $td/just.zip
+    curl --proto =https --tlsv1.3 -sSfL $archive > $td/just.zip
     unzip -d $td $td/just.zip
 else
-    curl --proto =https --tlsv1.2 -sSfL $archive | tar -C $td -xz
+    curl --proto =https --tlsv1.3 -sSfL $archive | tar -C $td -xz
 fi
 
 for f in $(ls $td); do