diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 3157ee3..992906b 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -15,7 +15,7 @@ jobs:
     - uses: actions/checkout@v4
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
 
diff --git a/spt_hiell_2020/spt_hiell.py b/spt_hiell_2020/spt_hiell.py
index b10dfb9..69b19a4 100644
--- a/spt_hiell_2020/spt_hiell.py
+++ b/spt_hiell_2020/spt_hiell.py
@@ -284,7 +284,7 @@ def get_requirements(self):
         return requirements
 
     def logp(self, **params_values):
-        dl = self.theory.get_Cl(units="muK2", ell_factor=True)["tt"]
+        dl = self.provider.get_Cl(units="muK2", ell_factor=True)["tt"]
         return self.loglike(dl, **params_values)