diff --git a/src/cnn.py b/src/cnn.py
index 4e3dbe118..fa0bbfe1a 100644
--- a/src/cnn.py
+++ b/src/cnn.py
@@ -13,6 +13,7 @@ import optax  # https://github.com/deepmind/optax
 from jaxtyping import Float  # https://github.com/google/jaxtyping
 from jaxtyping import Array, Int, PyTree
 from torch.utils.data import DataLoader
+from tqdm import tqdm
 
 
 class CNN(eqx.Module):
@@ -123,18 +124,29 @@ def train_loop(
         while True:
             yield from trainloader
 
-    for step, (x, y) in zip(range(steps), infinite_trainloader()):
+    test_loss, test_accuracy = 0, 0
+    progress_bar = tqdm(
+        zip(range(steps), infinite_trainloader()),
+        desc=f"training a cnn",
+        unit="step",
+        total=steps
+    )
+
+    for step, (x, y) in progress_bar:
         # PyTorch dataloaders give PyTorch tensors by default,
         # so convert them to NumPy arrays.
         x = x.numpy()
         y = y.numpy()
         model, opt_state, train_loss = make_step(model, opt_state, x, y)
+
         if (step % print_every) == 0 or (step == steps - 1):
             test_loss, test_accuracy = evaluate(model, testloader)
-            print(
-                f"{step=}, train_loss={train_loss.item()}, "
-                f"test_loss={test_loss.item()}, test_accuracy={test_accuracy.item()}"
-            )
+
+        progress_bar.set_postfix({
+            "trn-loss": f"{train_loss.item()}%",
+            "tst-loss": f"{test_loss}%",
+            "tst-acc": f"{test_accuracy}%"
+        })
     return model