diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 38dd586..0ff09a3 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -20,7 +20,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: tecolicom/actions-use-apt-tools@v1
         with:
-          tools: libsodium-dev
+          tools: libsodium-dev pkg-config
       - name: deploy
         uses: BDSI-Utwente/shinyapps-deploy-github-action@v1
         with: