diff --git a/.drone.yml b/.drone.yml
index 80ba8ad..0255d70 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -10,7 +10,7 @@ steps:
   - name: test-compiler
     image: archlinux
     commands:
-    - pacman -Sy cmake gcc make llvm bison flex gettext --noconfirm
+    - pacman -Sy cmake gcc make llvm bison flex gettext libffi --noconfirm
     - cd code/compiler
     - ./test.sh
   - name: build-live