diff --git a/gitlab/recipe_append.yaml b/gitlab/recipe_append.yaml
index dcfb307636a82766c6e1d0740dd78909afdd81ec..0ccd3b2c238e58abb6809f769749543b9b0c01f8 100644
--- a/gitlab/recipe_append.yaml
+++ b/gitlab/recipe_append.yaml
@@ -1,3 +1,4 @@
 build:
   script_env:
     - DOCSERVER
+    - MATPLOTLIBRC