diff --git a/.drone.yml b/.drone.yml
index 0f0c787..4e24a37 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -10,7 +10,7 @@ pipeline:
   build:
     image: local/pandoc
     commands:
-      - apt-get update && apt-get -y install graphviz
+      - apt-get update && apt-get -y install graphviz build-essential
       - make
 
   compress: