diff --git a/Makefile b/Makefile
index 39e57321..078e38ca 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@ VERSION := $(shell git describe --tags --always --dirty="-dev")
 LDFLAGS := -ldflags='-X "main.Version=$(VERSION)"'
 
 test:
-	GO111MODULE=on go test -v ./...
+	GO111MODULE=on go test -mod=vendor -v ./...
 
 all: dist/aws-okta-$(VERSION)-darwin-amd64 dist/aws-okta-$(VERSION)-linux-amd64