diff --git a/.drone.jsonnet b/.drone.jsonnet
index deec193..4def4d2 100644
--- a/.drone.jsonnet
+++ b/.drone.jsonnet
@@ -187,6 +187,7 @@ local PipelineDocs = {
       image: 'python:3.8',
       commands: [
         'pip install -r dev-requirements.txt -qq',
+        'pip install -qq .',
         'make doc',
       ],
     },
diff --git a/.drone.yml b/.drone.yml
index a83dca9..c3d4fa8 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -212,6 +212,7 @@ steps:
   image: python:3.8
   commands:
   - pip install -r dev-requirements.txt -qq
+  - pip install -qq .
   - make doc
 
 - name: test
@@ -306,6 +307,6 @@ depends_on:
 
 ---
 kind: signature
-hmac: a8fa81069f019d873f20bec815688759f4f862a962141dc8ec872f5abc8cadeb
+hmac: 781460b587be9a823d27129d03b5dd9c1ec5db7f72241192e65f226366bff486
 
 ...