diff --git a/.drone.yml b/.drone.yml
index 8a82861..8122617 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -13,6 +13,12 @@ trigger:
     - tag
 
 steps:
+- name: submodules
+  image: docker:git
+  commands:
+    - git submodule init
+    - git submodule update --recursive
+
 - name: GCC 8 / clang 7
   image: debian:buster-slim
   pull: always