diff --git a/stack-ghc8.6.5.yaml b/stack-ghc8.6.5.yaml
index 99496798d..2e66c7bf6 100644
--- a/stack-ghc8.6.5.yaml
+++ b/stack-ghc8.6.5.yaml
@@ -1,4 +1,4 @@
-resolver: lts-14.3 # ghc 8.6.5
+resolver: lts-14.27 # ghc 8.6.5
 
 extra-deps:
 - network-2.6.3.6
diff --git a/stack-ghc8.8.3.yaml b/stack-ghc8.8.3.yaml
deleted file mode 100644
index 475b164d7..000000000
--- a/stack-ghc8.8.3.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
-resolver: lts-16.8 # ghc 8.8.3
-
-extra-deps:
-- network-2.6.3.6
-- httpd-shed-0.4.0.3
-- cgi-3001.5.0.0@sha256:3d1193a328d5f627a021a0ef3927c1ae41dd341e32dba612fed52d0e3a6df056,2990
-- json-0.10@sha256:d9fc6b07ce92b8894825a17d2cf14799856767eb30c8bf55962baa579207d799,3210
-- multipart-0.2.0@sha256:b8770e3ff6089be4dd089a8250894b31287cca671f3d258190a505f9351fa8a9,1084
-