diff --git a/website/pages/en/index.js b/website/pages/en/index.js
index 3b8661d78a..1e17ec0520 100755
--- a/website/pages/en/index.js
+++ b/website/pages/en/index.js
@@ -118,7 +118,7 @@ from botorch.fit import fit_gpytorch_mll
 from botorch.utils import standardize
 from gpytorch.mlls import ExactMarginalLogLikelihood
 
-train_X = torch.rand(10, 2)
+train_X = torch.rand(10, 2, dtype=torch.double)
 Y = 1 - torch.linalg.norm(train_X - 0.5, dim=-1, keepdim=True)
 Y = Y + 0.1 * torch.randn_like(Y)  # add some noise
 train_Y = standardize(Y)