diff --git a/.travis.yml b/.travis.yml
index 1acc62691..1e93e25f8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,9 +31,9 @@ before_deploy:
   - mkdir dist
   - make deb-pkg rpm-pkg
   - mv *.deb *.rpm dist/
-  - GOOS=darwin CGO_ENABLED=0 go build -o dist/sops-${TRAVIS_TAG}.darwin go.mozilla.org/sops/cmd/sops
-  - GOOS=windows CGO_ENABLED=0 go build -o dist/sops-${TRAVIS_TAG}.exe go.mozilla.org/sops/cmd/sops
-  - GOOS=linux CGO_ENABLED=0 go build -o dist/sops-${TRAVIS_TAG}.linux go.mozilla.org/sops/cmd/sops
+  - GOOS=darwin CGO_ENABLED=0 go build -mod vendor -o dist/sops-${TRAVIS_TAG}.darwin go.mozilla.org/sops/cmd/sops
+  - GOOS=windows CGO_ENABLED=0 go build -mod vendor -o dist/sops-${TRAVIS_TAG}.exe go.mozilla.org/sops/cmd/sops
+  - GOOS=linux CGO_ENABLED=0 go build -mod vendor -o dist/sops-${TRAVIS_TAG}.linux go.mozilla.org/sops/cmd/sops
   - |
       if [ ! -z "$TRAVIS_TAG" ]; then
         version="$(grep '^const Version' version/version.go |cut -d '"' -f 2)"
diff --git a/Makefile b/Makefile
index 6dbe42d5a..443fc7116 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@ all: test vet generate install functional-tests
 origin-build: test vet generate install functional-tests-all
 
 install:
-	$(GO) install go.mozilla.org/sops/cmd/sops
+	$(GO) install -mod vendor go.mozilla.org/sops/cmd/sops
 
 tag: all
 	git tag -s $(TAGVER) -a -m "$(TAGMSG)"
@@ -39,7 +39,7 @@ generate: keyservice/keyservice.pb.go
 	protoc --go_out=plugins=grpc:. $<
 
 functional-tests:
-	$(GO) build -o functional-tests/sops go.mozilla.org/sops/cmd/sops
+	$(GO) build -mod vendor -o functional-tests/sops go.mozilla.org/sops/cmd/sops
 	cd functional-tests && cargo test
 
 # Ignored tests are ones that require external services (e.g. AWS KMS)