diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ddfa7978c6dc9280db6ebf98d0653e26e90cb7bd..28f8697c86e0cb65b7e2965e81324226f9146a23 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -14,4 +14,6 @@ build-doc:
     - apt install -y nodejs
     - npm install --global yarn
     - yarn install
+    - mkdir -p docs/substrate
+    - yarn generate:metadata
     - yarn build
\ No newline at end of file