diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 94dc27d1..0b036386 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,7 +15,7 @@ jobs:
         python-version: 3.11
     - name: Install toml python lib
       run: |
-        pip3 install toml
+        pip3 install toml jsonschema
     - name: Check TOML validity for apps.toml
       run: |
         python3 -c "import toml; toml.load(open('apps.toml'))"