diff --git a/VERSION b/VERSION
index 0febd07b2bad80587dd9415570aa0eb0a5c82e5b..ec70f75560773b1b4dc68dfd565d8308fb17bedc 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.6.6-rc2
+1.6.6
diff --git a/arkindex/system_workers.yml b/arkindex/system_workers.yml
index 4f2187469641875c3b37ce7f54de2d29941060b6..3d146aa7f65e41a0773b812f00393966ffc70e21 100644
--- a/arkindex/system_workers.yml
+++ b/arkindex/system_workers.yml
@@ -1,7 +1,7 @@
 # When releasing Arkindex, check that the Docker images set here are up to date,
 # then update the `version` to the current Arkindex version as set in the `VERSION` file
 # to confirm that the images have been manually checked.
-version: 1.6.6-rc2
+version: 1.6.6
 
 features:
     file_import: