diff --git a/TicTacToe/tic-tac-toe.ipynb b/TicTacToe/tic-tac-toe.ipynb
index f2a6277..97ed55c 100644
--- a/TicTacToe/tic-tac-toe.ipynb
+++ b/TicTacToe/tic-tac-toe.ipynb
@@ -50,7 +50,7 @@
    "source": [
     "class State:\n",
     "    def __init__(self, p1, p2):\n",
-    "        self.board = np.zeros((BOARD_ROWS, BOARD_COLS))\n",
+    "        self.board = np.zeros((BOARD_ROWS, BOARD_COLS), dtype = np.int32)\n",
     "        self.p1 = p1\n",
     "        self.p2 = p2\n",
     "        self.isEnd = False\n",
@@ -129,7 +129,7 @@
     "    \n",
     "    # board reset\n",
     "    def reset(self):\n",
-    "        self.board = np.zeros((BOARD_ROWS, BOARD_COLS))\n",
+    "        self.board = np.zeros((BOARD_ROWS, BOARD_COLS), dtype = np.int32)\n",
     "        self.boardHash = None\n",
     "        self.isEnd = False\n",
     "        self.playerSymbol = 1\n",
diff --git a/TicTacToe/ticTacToe.py b/TicTacToe/ticTacToe.py
index 5e18039..50012bd 100644
--- a/TicTacToe/ticTacToe.py
+++ b/TicTacToe/ticTacToe.py
@@ -7,7 +7,7 @@
 
 class State:
     def __init__(self, p1, p2):
-        self.board = np.zeros((BOARD_ROWS, BOARD_COLS))
+        self.board = np.zeros((BOARD_ROWS, BOARD_COLS), dtype = np.int32)
         self.p1 = p1
         self.p2 = p2
         self.isEnd = False
@@ -86,7 +86,7 @@ def giveReward(self):
 
     # board reset
     def reset(self):
-        self.board = np.zeros((BOARD_ROWS, BOARD_COLS))
+        self.board = np.zeros((BOARD_ROWS, BOARD_COLS), dtype = np.int32)
         self.boardHash = None
         self.isEnd = False
         self.playerSymbol = 1