diff --git a/install/ubuntu-1604.sh b/install/ubuntu-1604.sh
index f72dc985c..ca51e429a 100644
--- a/install/ubuntu-1604.sh
+++ b/install/ubuntu-1604.sh
@@ -2,7 +2,7 @@
 name=xenial
 echo "Running Hydro Installer for ubuntu 16.04"
 echo "此脚本已不再维护，推荐使用新版安装工具："
-echo "wget https://s3.undefined.moe/public/install -O install && chmod +x install && ./install"
+echo "LANG=zh bash <(curl https://hydro.ac/install.sh)"
 echo "详情请参阅文档 -> https://hydro.js.org"
 echo "使用 Ctrl-C 退出该脚本，或是等待十秒后继续。"
 echo "Will continue installation in 10 secs, press Ctrl-C to exit"
diff --git a/install/ubuntu-1804.sh b/install/ubuntu-1804.sh
index 1d8bd39cd..a52d2c74f 100644
--- a/install/ubuntu-1804.sh
+++ b/install/ubuntu-1804.sh
@@ -2,7 +2,7 @@
 name=bionic
 echo "Running Hydro Installer for ubuntu 18.04"
 echo "此脚本已不再维护，推荐使用新版安装工具："
-echo "wget https://s3.undefined.moe/public/install -O install && chmod +x install && ./install"
+echo "LANG=zh bash <(curl https://hydro.ac/install.sh)"
 echo "详情请参阅文档 -> https://hydro.js.org"
 echo "使用 Ctrl-C 退出该脚本，或是等待十秒后继续。"
 echo "Will continue installation in 10 secs, press Ctrl-C to exit"
diff --git a/install/ubuntu-2004.sh b/install/ubuntu-2004.sh
index 3583be4ba..670149652 100644
--- a/install/ubuntu-2004.sh
+++ b/install/ubuntu-2004.sh
@@ -2,7 +2,7 @@
 name=focal
 echo "Running Hydro Installer for ubuntu 20.04"
 echo "此脚本已不再维护，推荐使用新版安装工具："
-echo "wget https://s3.undefined.moe/public/install -O install && chmod +x install && ./install"
+echo "LANG=zh bash <(curl https://hydro.ac/install.sh)"
 echo "详情请参阅文档 -> https://hydro.js.org"
 echo "使用 Ctrl-C 退出该脚本，或是等待十秒后继续。"
 echo "Will continue installation in 10 secs, press Ctrl-C to exit"
diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index aaad4fb75..b3e940970 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "3.15.6",
+    "version": "3.15.7",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",
diff --git a/packages/hydrooj/setting.yaml b/packages/hydrooj/setting.yaml
index d356e3785..176798b2f 100644
--- a/packages/hydrooj/setting.yaml
+++ b/packages/hydrooj/setting.yaml
@@ -51,17 +51,29 @@ langs:
       highlight: cpp
       monaco: cpp
       display: C++
-    cc.std98:
+    cc.cc98:
       compile: /usr/bin/g++ -Wall -std=c++98 -o foo foo.cc -lm
-      display: C++ 98
-    cc.std11:
+      display: C++98
+    cc.cc98o2:
+      compile: /usr/bin/g++ -Wall -std=c++98 -o foo foo.cc -lm -O2
+      display: C++98(O2)
+    cc.cc11:
       compile: /usr/bin/g++ -Wall -std=c++11 -o foo foo.cc -lm
-      display: C++ 11
-    cc.std14:
-      display: C++ 14
-    cc.std17:
+      display: C++11
+    cc.cc11o2:
+      compile: /usr/bin/g++ -Wall -std=c++11 -o foo foo.cc -lm -O2
+      display: C++11(O2)
+    cc.cc14:
+      display: C++14
+    cc.cc14o2:
+      compile: /usr/bin/g++ -Wall -std=c++14 -o foo foo.cc -lm -O2
+      display: C++14(O2)
+    cc.cc17:
       compile: /usr/bin/g++ -Wall -std=c++17 -o foo foo.cc -lm
-      display: C++ 17
+      display: C++17
+    cc.cc17o2:
+      compile: /usr/bin/g++ -Wall -std=c++17 -o foo foo.cc -lm -O2
+      display: C++17(O2)
     pas:
       compile: /usr/bin/fpc -O2 -o/w/foo foo.pas
       highlight: pascal