diff --git a/tasks/repository.yml b/tasks/repository.yml
index 4952355..1170436 100644
--- a/tasks/repository.yml
+++ b/tasks/repository.yml
@@ -12,7 +12,7 @@
 - name: repository | add public key
   ansible.builtin.apt_key:
     id: E298A3A825C0D65DFD57CBB651716619E084DAB9
-    keyserver: keyserver.ubuntu.com
+    keyserver: "{{ apt_key_keyserver | default('keyserver.ubuntu.com') }}"
     state: present
   tags:
     - r-repository-public-key