diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3e7a670b9f..620d3f74ad 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -166,7 +166,7 @@ jobs:
             deps-${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}
 
       - name: Install dependencies
-        run: mix deps.get --only e2e
+        run: mix deps.get --only e2e --only dev
 
       - name: Restore npm cache
         uses: actions/cache@v2
@@ -176,7 +176,13 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-node-
 
-      - name: npm install and test
+      - name: npm install (assets)
+        run: cd assets && npm install && cd ..
+
+      - name: Build assets
+        run: mix assets.build
+
+      - name: Run e2e tests
         run: |
           npm install
           npm run e2e:test