diff --git a/.drone.yml b/.drone.yml
index 950e0cb..f2c469e 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -20,5 +20,6 @@ pipeline:
   build:
     image: python:${IMAGE}
     commands:
+      - apt update && apt install -y libsodium-dev
       - pip install tox
       - tox -e ${TOXENV}