diff --git a/mydeck/core.py b/mydeck/core.py
index 5d0aa6c..a41d18e 100644
--- a/mydeck/core.py
+++ b/mydeck/core.py
@@ -14,7 +14,7 @@
 Card = collections.namedtuple("Card", ["rank", "suit"])
 
 # %% ../nbs/05_deck.ipynb 9
-#| code-fold: true
+# | code-fold: true
 class FrenchDeck:
     ranks = [n for n in range(1, 14)]
     suits = "spades diamonds clubs hearts".split()
diff --git a/mydeck/utils.py b/mydeck/utils.py
index 1f3ea92..faccb63 100644
--- a/mydeck/utils.py
+++ b/mydeck/utils.py
@@ -11,10 +11,12 @@
 from mydeck.core import Card
 
 # %% ../nbs/06_hand.ipynb 3
-#| code-fold: true
+# | code-fold: true
 class Hand:
     def __init__(
-        self, max_cards: Optional[int] = None  # Max amount of cards it can be hold
+        # Max amount of cards it can be hold
+        self,
+        max_cards: Optional[int] = None,
     ):
         self._max_cards = max_cards
         self.cards: List[Card] = []
diff --git a/nbs/06_hand.ipynb b/nbs/06_hand.ipynb
index e176ac2..aecc76a 100644
--- a/nbs/06_hand.ipynb
+++ b/nbs/06_hand.ipynb
@@ -137,13 +137,24 @@
    "execution_count": null,
    "id": "8cabce32",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "Card(rank=1, suit='spades')"
+      ]
+     },
+     "execution_count": null,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "#| exec_doc\n",
     "#| code-fold: false\n",
     "card = Card(rank=1, suit=\"spades\")\n",
     "\n",
-    "hand.draw(card)\n",
+    "hand.draw(card)  # type: ignore\n",
     "hand"
    ]
   },
@@ -160,7 +171,18 @@
    "execution_count": null,
    "id": "45aa3d73",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[Card(rank=1, suit='spades')]"
+      ]
+     },
+     "execution_count": null,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "#| exec_doc\n",
     "[card for card in hand]"
@@ -171,10 +193,21 @@
    "execution_count": null,
    "id": "1b8584bd",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "0"
+      ]
+     },
+     "execution_count": null,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "#| exec_doc\n",
-    "hand.discard()\n",
+    "hand.discard()  # type: ignore\n",
     "len(hand)"
    ]
   },