diff --git a/webapp/backend/main.py b/webapp/backend/main.py
index 4b039a7..f05ba32 100644
--- a/webapp/backend/main.py
+++ b/webapp/backend/main.py
@@ -866,8 +866,8 @@ async def run(
     max_runtime_minutes: float = Form(10.0),
 ) -> dict[str, str]:
     solver = solver.lower().strip()
-    if solver != "highs":
-        raise HTTPException(status_code=400, detail="Only HiGHS is enabled at the moment")
+    if solver not in {"highs", "gurobi"}:
+        raise HTTPException(status_code=400, detail="Unsupported solver")
     availability = _get_solver_availability()
     if not availability.get(solver, False):
         raise HTTPException(status_code=400, detail=f"Solver not available: {solver}")
diff --git a/webapp/frontend/src/App.jsx b/webapp/frontend/src/App.jsx
index e07e6db..382db6b 100644
--- a/webapp/frontend/src/App.jsx
+++ b/webapp/frontend/src/App.jsx
@@ -376,7 +376,7 @@ export default function App() {
       const reported = data?.solvers || {};
       const solvers = {
         highs: reported.highs !== false,
-        gurobi: false,
+        gurobi: reported.gurobi === true,
       };
       setAvailableSolvers(solvers);
       if (solver === "gurobi" && !solvers.gurobi) {
@@ -785,7 +785,7 @@ export default function App() {
               onChange={(event) => setSolver(event.target.value)}
             >
               <option value="highs">HiGHS</option>
-              <option value="gurobi" disabled>
+              <option value="gurobi" disabled={!availableSolvers.gurobi}>
                 Gurobi
               </option>
             </select>