diff --git a/backend/src/langs.ts b/backend/src/langs.ts
index 475c68d..5629988 100644
--- a/backend/src/langs.ts
+++ b/backend/src/langs.ts
@@ -2219,6 +2219,16 @@ binding_irb.run(IRB.conf)
 (newline)
 `,
   },
+  scilab: {
+    aliases: ["sci"],
+    name: "Scilab",
+    repl: "scilab-cli",
+    main: "main.sci",
+    run: "scilab-cli -f main.sci",
+    template: `disp("Hello, world!")
+`,
+    skip: ["repl", "runrepl"],
+  },
   scss: {
     name: "SCSS",
     monacoLang: "scss",
diff --git a/scripts/docker-install-phase3d.bash b/scripts/docker-install-phase3d.bash
index 5e3fa91..63a8332 100755
--- a/scripts/docker-install-phase3d.bash
+++ b/scripts/docker-install-phase3d.bash
@@ -18,6 +18,9 @@ scala
 # Scheme
 mit-scheme
 
+# Scilab
+scilab
+
 # Sed
 sed