diff --git a/_toc.yml b/_toc.yml
index 3029246..5d6b014 100644
--- a/_toc.yml
+++ b/_toc.yml
@@ -31,8 +31,8 @@ parts:
       title: Tutorial
     - file: chapters/data-analytics/pandas-exercise
       title: Exercise
-    # - file: chapters/data-analytics/pandas-solution
-    #   title: Solution
+    - file: chapters/data-analytics/pandas-solution
+      title: Solution
   - file: chapters/data-analytics/scipy
     title: SciPy
     sections: