diff --git a/semaphoreci.sh b/semaphoreci.sh
index 28fdb18..c14bd56 100755
--- a/semaphoreci.sh
+++ b/semaphoreci.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
 
 STACK=$SEMAPHORE_CACHE_DIR/stack
+export STACK_ROOT=$SEMAPHORE_CACHE_DIR/.stack
 
 setup() {
 	if [ ! -e "$STACK" ]
diff --git a/stack.yaml b/stack.yaml
index 347682e..527dc48 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,7 +1,7 @@
 resolver: lts-14.7
 
 packages:
-- '.'
+- .
 
 extra-deps: []
 flags: {}