diff --git a/Makefile b/Makefile
index f309ef7..8c6a29a 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,9 @@ all: setup build test lint
 .PHONY: setup
 setup:
 	stack setup $(STACK_ARGUMENTS)
-	stack build $(STACK_ARGUMENTS) --dependencies-only --test --no-run-tests
+	stack build $(STACK_ARGUMENTS) \
+	  --flag yesod-auth-oauth2:example \
+	  --dependencies-only --test --no-run-tests
 	stack install $(STACK_ARGUMENTS) hlint weeder
 
 .PHONY: build