diff --git a/.travis.yml b/.travis.yml
index 6e655f16..f7e758e2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@ language: go
 install: true
 
 go:
-  - "1.10.1"
+  - "1.13.4"
 
 script:
   - make test
diff --git a/Makefile b/Makefile
index ed8b6ec1..2feffacd 100644
--- a/Makefile
+++ b/Makefile
@@ -8,9 +8,6 @@ GOARCH ?= $(shell go env GOARCH)
 $(EXE): go.mod *.go lib/*.go
 	go build -v -ldflags "-X main.version=$(VER)" -o $@ $(PKG)
 
-Gopkg.lock: Gopkg.toml
-	dep ensure
-
 .PHONY: release
 release: $(EXE) darwin linux