diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 870478e..3f6e98c 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -30,7 +30,7 @@ jobs:
         sudo apt-get install -y r-base
     - name: Install R packages
       run: |
-        sudo R -e 'install.packages(c("polycor", "locpol", "wCorr"), repos="https://cran.rstudio.com/")'
+        sudo R -e 'install.packages(c("polycor", "locpol", "wCorr", "gam", "gnm"), repos="https://cran.rstudio.com/")'
     - name: Setup conda
       uses: s-weigand/setup-conda@v1
     - name: Install dependencies