diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 78a48b51ca..b6d828df13 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -62,7 +62,7 @@ jobs:
     env: 
       # if running on RMG-Py but requiring changes on an un-merged branch of RMG-database, replace
       # main with the name of the branch
-      RMG_DATABASE_BRANCH: main
+      RMG_DATABASE_BRANCH: update_atom_enthalpies
 
       # This is true only if this is a reference case for the regression testing:
       REFERENCE_JOB: ${{ github.ref == 'refs/heads/main' && matrix.os =='ubuntu-latest' && github.repository == 'ReactionMechanismGenerator/RMG-Py' }}
diff --git a/arkane/outputTest.py b/arkane/outputTest.py
index 34dfb95e44..1b012e2a52 100644
--- a/arkane/outputTest.py
+++ b/arkane/outputTest.py
@@ -63,7 +63,7 @@ def test_prettify(self):
         with open(os.path.join(benzyl_path, 'output.py'), 'r') as f:
             lines = f.readlines()
         self.assertIn('conformer(\n', lines)
-        self.assertIn("    E0 = (193.749, 'kJ/mol'),\n", lines)
+        self.assertIn("    E0 = (195.161, 'kJ/mol'),\n", lines)
         self.assertIn('thermo(\n', lines)
         self.assertIn("        Cp0 = (33.2579, 'J/(mol*K)'),\n", lines)
 
diff --git a/arkane/statmechTest.py b/arkane/statmechTest.py
index 35daffcc1c..4425d7fa0e 100644
--- a/arkane/statmechTest.py
+++ b/arkane/statmechTest.py
@@ -191,7 +191,7 @@ def test_specifying_absolute_file_paths(self):
         statmech_job = StatMechJob(species=h2o2, path=h2o2_path)
         statmech_job.level_of_theory = LevelOfTheory('b3lyp', '6-311+g(3df,2p)')
         statmech_job.load(pdep=False, plot=False)
-        self.assertAlmostEqual(h2o2.conformer.E0.value_si, -146031.49933673252)
+        self.assertAlmostEqual(h2o2.conformer.E0.value_si, -145935.26733679877)
         os.remove(h2o2_path)
 
     def test_hinder_rotor_from_1d_array(self):