diff --git a/backend/src/langs.ts b/backend/src/langs.ts
index a182ed2..9cede8b 100644
--- a/backend/src/langs.ts
+++ b/backend/src/langs.ts
@@ -2789,6 +2789,17 @@ end
 `,
     skip: ["lsp"],
   },
+  rebol: {
+    name: "REBOL",
+    repl: "rebol",
+    main: "main.r",
+    run: "rebol main.r; rebol",
+    runReplInput: `DELAY: 1
+123 * 234`,
+    template: `REBOL [Title: "Main"]
+print "Hello, world!"
+`,
+  },
   redis: {
     name: "Redis",
     monacoLang: "redis",
diff --git a/scripts/docker-install-phase4.bash b/scripts/docker-install-phase4.bash
index 6bfda4d..ebdf8d7 100755
--- a/scripts/docker-install-phase4.bash
+++ b/scripts/docker-install-phase4.bash
@@ -292,6 +292,13 @@ unzip rls-linux.zip
 mv rls-linux/reason-language-server /usr/local/bin/
 rm rls-linux.zip
 
+# Rebol
+file="$(curl -sSL http://www.rebol.com/downloads.html | sed '0,/x86-64/d' | head -n10 | grep -Eo 'downloads/[^"]+')"
+wget -nv "http://www.rebol.com/${file}"
+tar -xf rebol-core-*.tar.gz
+mv rebol-core/rebol /usr/local/bin/
+rm -rf rebol-core rebol-core-*.tar.gz
+
 # Rust
 export CARGO_HOME=/opt/rust
 export RUSTUP_HOME=/opt/rust