2 files changed, 9 insertions, 1 deletions
diff --git a/install.hs b/install.hs
index d8c36c1..5bd2b63 100755
--- a/install.hs
+++ b/install.hs
@@ -39,7 +39,7 @@ import System.Process.Typed
 -- | Keep this in sync with the stack.yamls at the top level of the project.
 supportedGhcVersions :: [Version]
 supportedGhcVersions =
-  map Version ["8.0.2", "8.2.2", "8.4.3", "8.4.4", "8.6.3"]
+  map Version ["8.0.2", "8.2.2", "8.4.3", "8.4.4", "8.6.3", "8.6.4"]
 
 newtype Version = Version { unVersion :: String } deriving Eq
 
diff --git a/stack-8.6.4.yaml b/stack-8.6.4.yaml
new file mode 100644
index 0000000..dc6a90a
--- /dev/null
+++ b/stack-8.6.4.yaml
@@ -0,0 +1,8 @@
+resolver: lts-13.12
+packages:
+- '.'
+- location: vendor/cabal-helper-0.8.1.2
+  extra-dep: true
+allow-newer: true
+extra-deps:
+  - cabal-plan-0.4.0.0