diff --git a/09_tabular.ipynb b/09_tabular.ipynb
index e34984b..136c8f5 100644
--- a/09_tabular.ipynb
+++ b/09_tabular.ipynb
@@ -9737,6 +9737,18 @@
    "display_name": "Python 3",
    "language": "python",
    "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.7.4"
   }
  },
  "nbformat": 4,
diff --git a/clean/09_tabular.ipynb b/clean/09_tabular.ipynb
index 7825e04..74a1026 100644
--- a/clean/09_tabular.ipynb
+++ b/clean/09_tabular.ipynb
@@ -8340,6 +8340,18 @@
    "display_name": "Python 3",
    "language": "python",
    "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.7.4"
   }
  },
  "nbformat": 4,