diff --git a/doc/forum/Migrate_from_one_connection_mechanism_for_special_remote_to_another/comment_1_6e8e3350ae26b6c59daa56b7e86cc46a._comment b/doc/forum/Migrate_from_one_connection_mechanism_for_special_remote_to_another/comment_1_6e8e3350ae26b6c59daa56b7e86cc46a._comment
deleted file mode 100644
index e3a63b3f91..0000000000
--- a/doc/forum/Migrate_from_one_connection_mechanism_for_special_remote_to_another/comment_1_6e8e3350ae26b6c59daa56b7e86cc46a._comment
+++ /dev/null
@@ -1,14 +0,0 @@
-[[!comment format=mdwn
- username="joey"
- subject="""comment 1"""
- date="2018-05-30T15:21:57Z"
- content="""
-Yes, there is an intermediate encryption key.
-
-What may work is to use `git annex enableremote` on the original remote
-with `externaltype=rclone`, which will make it use the other program.
-
-Whether this will work depends on implementation details of both special
-remotes. If they use the same names/urls/whatever to access the data stored
-in them, it should work.
-"""]]
diff --git a/stack.yaml b/stack.yaml
index f7bffe8b4e..64e1081f95 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -16,16 +16,9 @@ flags:
 packages:
 - '.'
 extra-deps:
-- IfElse-0.85
-- aws-0.20
+- aws-0.17.1
 - bloomfilter-2.0.1.0
-- esqueleto-2.5.3
-- sandi-0.4.2
 - torrent-10000.1.1
-- persistent-2.7.3.1
-- conduit-1.3.0.2
-- resourcet-1.2.1
-allow-newer: true
 explicit-setup-deps:
   git-annex: true
-resolver: lts-11.11
+resolver: lts-9.9