diff --git a/packages/setup-ocaml/src/constants.ts b/packages/setup-ocaml/src/constants.ts
index 23890d47..17144100 100644
--- a/packages/setup-ocaml/src/constants.ts
+++ b/packages/setup-ocaml/src/constants.ts
@@ -19,6 +19,9 @@ export const ARCHITECTURE = (() => {
     case "x64": {
       return "x86_64";
     }
+    case "riscv64": {
+      return "riscv64";
+    }
     default: {
       throw new Error("The architecture is not supported.");
     }