diff --git a/CURATORS.md b/CURATORS.md
index 925e16bd..48fda960 100644
--- a/CURATORS.md
+++ b/CURATORS.md
@@ -44,7 +44,7 @@ Additional (non-Haskell) system libraries or tools should be added to `stackage/
 Committing the changes to a branch should trigger a DockerHub. Normally only the nightly branch needs to be updated
 since new packages are not added to the current lts release.
 
-Use [Ubuntu Package content search](http://packages.ubuntu.com/) to determine which package provides particular dev files (it defaults to trusty which is the same version as the server).
+Use [Ubuntu Package content search](http://packages.ubuntu.com/) to determine which package provides particular dev files (it defaults to xenial which is the version used to build Nightly).
 
 Note we generally don't install/run services needed for testsuites in the docker images - packages with tests requiring some system service can be add to expected-test-failures.