diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ab5a2871..9506faeb 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,10 +11,14 @@ jobs:
               with:
                     submodules: recursive
             - run: sudo apt update
-            - run: sudo apt install build-essential cmake libblas-dev liblapack-dev python3-dev python3-networkx python3-numpy python3-scipy python3-matplotlib python3-nose2
+            - run: sudo apt install build-essential cmake libblas-dev liblapack-dev
+            - uses: actions/setup-python@v4
+              with:
+                python-version: '3.10'
+            - run: pip install numpy scipy matplotlib nose2 networkx
             - run: cmake -D CMAKE_BUILD_TYPE=${{ matrix.btype }} -D WRAP_PYTHON=ON .
             - run: make -j 2
-            - run: nose2-3 --output-buffer
+            - run: nose2
       test-base-linux:
             runs-on: ubuntu-latest
             strategy:
@@ -40,11 +44,14 @@ jobs:
               with:
                     submodules: recursive
             - run: brew update
-            - run: brew install cmake openblas superlu python 1>/dev/null || true
-            - run: pip3 install --user networkx numpy scipy matplotlib nose2
+            - run: brew install cmake openblas superlu 1>/dev/null || true
+            - uses: actions/setup-python@v4
+              with:
+                python-version: '3.11'
+            - run: pip3 install networkx numpy scipy matplotlib nose2
             - run: cmake -D CMAKE_BUILD_TYPE=${{ matrix.btype }} -D WRAP_PYTHON=ON -D PYTHON_EXECUTABLE=$(python3-config --prefix)/bin/python3.11 -D PYTHON_LIBRARY=$(python3-config --prefix)/lib/libpython3.11.dylib -D PYTHON_INCLUDE_DIR=$(python3-config --prefix)/include/python3.11 -D USE_OPENMP=OFF .
             - run: make -j 2
-            - run: ~/Library/Python/3.11/bin/nose2 --output-buffer
+            - run: nose2 --output-buffer
       test-base-mac:
             runs-on: macos-latest
             strategy:
diff --git a/src/cp/hucocks.cxx b/src/cp/hucocks.cxx
index 29c474dc..da6b4aed 100644
--- a/src/cp/hucocks.cxx
+++ b/src/cp/hucocks.cxx
@@ -458,11 +458,6 @@ double HuCocksPrecipitationModel::dG_df(double f, double T) const
     dc_eff += a;
   }
   
-  // Get the effective equilibrium concentration
-  double ceq_eff = 1;
-  for (auto ci : ceq_)
-    ceq_eff *= ci->value(T);
-
   return -kboltz_ * T / vm_ * dc_eff / c_eff;
 }