diff --git a/_toc.yml b/_toc.yml
index 33a3a73ac..b224b01c5 100644
--- a/_toc.yml
+++ b/_toc.yml
@@ -139,6 +139,7 @@ chapters:
   - file: notebooks/challenge/paleo/paleo
     sections:
     - file: notebooks/challenge/paleo/exercise_1
+    - file: notebooks/challenge/paleo/exercise_2
   - file: notebooks/challenge/cam-chem_waccm/cam-chem_waccm
     sections:
     - file: notebooks/challenge/cam-chem_waccm/exercise_1
diff --git a/notebooks/challenge/paleo/paleo_exercise_1.ipynb b/notebooks/challenge/paleo/exercise_1.ipynb
similarity index 100%
rename from notebooks/challenge/paleo/paleo_exercise_1.ipynb
rename to notebooks/challenge/paleo/exercise_1.ipynb
diff --git a/notebooks/challenge/paleo/paleo_exercise_2.ipynb b/notebooks/challenge/paleo/exercise_2.ipynb
similarity index 100%
rename from notebooks/challenge/paleo/paleo_exercise_2.ipynb
rename to notebooks/challenge/paleo/exercise_2.ipynb