diff --git a/Ch02-1-Data-Variables-StdIO.ipynb b/Ch02-1-Data-Variables-StdIO.ipynb
index 6c078e3..a347b8f 100644
--- a/Ch02-1-Data-Variables-StdIO.ipynb
+++ b/Ch02-1-Data-Variables-StdIO.ipynb
@@ -51,7 +51,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [
     {
@@ -60,7 +60,7 @@
        "int"
       ]
      },
-     "execution_count": 1,
+     "execution_count": 2,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -71,7 +71,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [
     {
@@ -80,7 +80,7 @@
        "int"
       ]
      },
-     "execution_count": 2,
+     "execution_count": 3,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1293,7 +1293,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.11.4"
+   "version": "3.10.13"
   }
  },
  "nbformat": 4,