diff --git a/.fixtures.yml b/.fixtures.yml
index 930b41bea4f0050a2bf66b8af5d5f02ba2184568..abdb1ed25bb48531388c78ea56c8310bfa0922ed 100644
--- a/.fixtures.yml
+++ b/.fixtures.yml
@@ -1,4 +1,11 @@
 fixtures:
+  forge_modules:
+    "augeas_core":
+      "repo": "puppetlabs/augeas_core"
+      "puppet_version": ">= 6.0.0"
+    "mailalias_core":
+      "repo": "puppetlabs/mailalias_core"
+      "puppet_version": ">= 6.0.0"
   repositories:
     "augeas": "https://github.com/camptocamp/puppet-augeas.git"
     "stdlib": "https://github.com/puppetlabs/puppetlabs-stdlib.git"