diff --git a/oioioi_init.sh b/oioioi_init.sh
index 8bea4c15d..a924fad58 100755
--- a/oioioi_init.sh
+++ b/oioioi_init.sh
@@ -5,6 +5,18 @@ set -x
 /sio2/oioioi/wait-for-it.sh -t 60 "${DATABASE_HOST:-db}:${DATABASE_PORT:-5432}"
 
 if [ "$1" == "--dev" ]; then
+    echo "Checking frontend dependencies..."
+
+    if ! (cd ../oioioi && npm list --depth=0 > /dev/null 2>&1); then
+        echo "Dependencies mismatch or missing. Running npm install..."
+        (cd ../oioioi && npm install)
+    else
+        echo "Dependencies are up to date."
+    fi
+
+    echo "Building frontend assets..."
+    (cd ../oioioi && npm run build)
+
     ./manage.py migrate 2>&1 | tee /sio2/deployment/logs/migrate.log
     ./manage.py loaddata ../oioioi/extra/dbdata/default_admin.json