1 files changed, 5 insertions, 1 deletions
diff --git a/stack.yaml b/stack.yaml
index a1a2869..abe5576 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,5 +1,9 @@
 packages:
 - '.'
-resolver: lts-9.0
+resolver: lts-11.17
 extra-deps:
+- graphviz-2999.18.1.2
+- posix-pty-0.2.1.1
+- sandi-0.4.2
+- fgl-5.5.4.0
 explicit-setup-deps: