diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3de9b99f16..05bf343328 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -228,6 +228,21 @@ check-doc-trytond:
   variables:
     PACKAGE: trytond
 
+check-trytond-rng:
+  extends: .check
+  before_script:
+    - pip install rnc2rng
+  script:
+    - python trytond/setup.py update_rng
+    - |
+      if [ `hg status | wc -l` -ne 0 ]; then
+        false
+      fi
+  rules:
+    - changes:
+        - trytond/**/*.rnc
+        - trytond/**/*.rng
+
 trigger-doc-build-trytond:
   extends: .trigger-doc-build
   variables: