diff --git a/stack-lts-6.yaml b/stack-lts-6.yaml
deleted file mode 100644
index 19f07c3..0000000
--- a/stack-lts-6.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-resolver: lts-6.30
-packages:
-- '.'
-extra-deps: []
-flags: {}
-extra-package-dbs: []
diff --git a/stack-lts-7.yaml b/stack-lts-7.yaml
deleted file mode 100644
index 5ffaec4..0000000
--- a/stack-lts-7.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-resolver: lts-7.19
-packages:
-- '.'
-extra-deps: []
-flags: {}
-extra-package-dbs: []
diff --git a/stack-lts-9.yaml b/stack-lts-9.yaml
deleted file mode 100644
index 7e860d7..0000000
--- a/stack-lts-9.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-resolver: lts-9.1
-packages:
-- '.'
-extra-deps: []
-flags: {}
-extra-package-dbs: []