diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a8c609130..3c65b3821 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -32,7 +32,7 @@ jobs:
 
       - name: Install (Prod dependencies only)
         if: ${{ matrix.flavor == 'prod'}}
-        run: npm ci --prod
+        run: npm ci --prod --no-optional
         working-directory: ${{ matrix.flavor }}/backend
 
       - name: Lint 
@@ -67,7 +67,7 @@ jobs:
           registry-url: 'https://registry.npmjs.org'
 
       - name: Install (Prod dependencies only)
-        run: npm ci --prod
+        run: npm ci --prod --no-optional
         if: ${{ matrix.flavor == 'prod'}}
         working-directory: ${{ matrix.flavor }}/frontend