diff --git a/stack-7.8.yaml b/stack-7.8.yaml
index 3445cee2..d77727a2 100644
--- a/stack-7.8.yaml
+++ b/stack-7.8.yaml
@@ -34,7 +34,7 @@ extra-deps:
 - hpack-0.14.0
 - microlens-0.4.1.0
 - open-browser-0.2.1.0
-- tls-1.3.5
+- tls-1.3.8
 - cryptonite-0.15 # for tls-1.3.5
 - memory-0.12
 - asn1-parse-0.9.4
diff --git a/stack-8.0.yaml b/stack-8.0.yaml
index 513ffdbb..c4971da0 100644
--- a/stack-8.0.yaml
+++ b/stack-8.0.yaml
@@ -1,4 +1,4 @@
-resolver: nightly-2016-04-19
+resolver: nightly-2016-05-13
 compiler: ghc-8.0.0.20160421
 compiler-check: match-exact
 setup-info:
@@ -29,11 +29,6 @@ extra-deps:
 - monad-unlift-0.1.2.0
 packages:
 - .
-# https://github.com/ekmett/either/issues/44
-- location:
-    git: https://github.com/ekmett/either
-    commit: 40261cf
-  extra-dep: true
 # Not the commit this links to, but discussed on
 # https://github.com/haskell/bytestring/commit/717f1151751fceb4e49874737dd0f15839ffd541
 - location:
diff --git a/stack.cabal b/stack.cabal
index 181289c6..293e4555 100644
--- a/stack.cabal
+++ b/stack.cabal
@@ -206,7 +206,7 @@ library
                    , text >= 1.2.0.4
                    , text-binary
                    , time >= 1.4.2
-                   , tls >= 1.3.5
+                   , tls >= 1.3.8
                    , transformers >= 0.3.0.0
                    , transformers-base >= 0.4.4
                    , unix-compat
diff --git a/stack.yaml b/stack.yaml
index 4677be0e..26731023 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,4 @@
-resolver: lts-5.15
+resolver: lts-5.17
 # docker:
 #   enable: true
 #   repo: fpco/stack-full