diff --git a/.travis.yml b/.travis.yml
index 0ed03f5..de743d3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,4 +24,4 @@ jobs:
         on:
           tags: true
         api_key:
-          secure: "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"
+          secure: "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"
diff --git a/.traviskey b/.traviskey
index 6f6c93a..e23876a 100644
--- a/.traviskey
+++ b/.traviskey
@@ -1 +1 @@
-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
diff --git a/basic.mk b/basic.mk
index e9d4a86..61567b5 100644
--- a/basic.mk
+++ b/basic.mk
@@ -1,3 +1,6 @@
+# Set the shell
+SHELL := /bin/bash
+
 # Set an output prefix, which is the local directory if not specified
 PREFIX?=$(shell pwd)
 
@@ -56,12 +59,16 @@ all: clean build fmt lint test staticcheck vet install ## Runs a clean, build, f
 .PHONY: fmt
 fmt: ## Verifies all files have been `gofmt`ed.
 	@echo "+ $@"
-	@gofmt -s -l . | grep -v '.pb.go:' | grep -v vendor | tee /dev/stderr
+	@if [[ ! -z "$(shell gofmt -s -l . | grep -v '.pb.go:' | grep -v '.twirp.go:' | grep -v vendor | tee /dev/stderr)" ]]; then \
+		exit 1; \
+	fi
 
 .PHONY: lint
 lint: ## Verifies `golint` passes.
 	@echo "+ $@"
-	@golint ./... | grep -v '.pb.go:' | grep -v vendor | tee /dev/stderr
+	@if [[ ! -z "$(shell golint ./... | grep -v '.pb.go:' | grep -v '.twirp.go:' | grep -v vendor | tee /dev/stderr)" ]]; then \
+		exit 1; \
+	fi
 
 .PHONY: test
 test: prebuild ## Runs the go tests.
@@ -71,12 +78,16 @@ test: prebuild ## Runs the go tests.
 .PHONY: vet
 vet: ## Verifies `go vet` passes.
 	@echo "+ $@"
-	@$(GO) vet $(shell $(GO) list ./... | grep -v vendor) | grep -v '.pb.go:' | tee /dev/stderr
+	@if [[ ! -z "$(shell $(GO) vet $(shell $(GO) list ./... | grep -v vendor) | tee /dev/stderr)" ]]; then \
+		exit 1; \
+	fi
 
 .PHONY: staticcheck
 staticcheck: ## Verifies `staticcheck` passes.
 	@echo "+ $@"
-	@staticcheck $(shell $(GO) list ./... | grep -v vendor) | grep -v '.pb.go:' | tee /dev/stderr
+	@if [[ ! -z "$(shell staticcheck $(shell $(GO) list ./... | grep -v vendor) | tee /dev/stderr)" ]]; then \
+		exit 1; \
+	fi
 
 .PHONY: cover
 cover: prebuild ## Runs go test with coverage.
@@ -158,12 +169,12 @@ AUTHORS:
 
 .PHONY: vendor
 vendor: ## Updates the vendoring directory.
-	@$(RM) Gopkg.toml Gopkg.lock
-	@$(RM) go.mod go.sum
+	@$(RM) go.sum
 	@$(RM) -r vendor
-	@GO111MODULE=on $(GO) mod init
-	@GO111MODULE=on $(GO) mod tidy
-	@GO111MODULE=on $(GO) mod vendor
+	GO111MODULE=on $(GO) mod init || true
+	GO111MODULE=on $(GO) mod tidy
+	GO111MODULE=on $(GO) mod vendor
+	@$(RM) Gopkg.toml Gopkg.lock
 
 .PHONY: clean
 clean: ## Cleanup any build binaries or packages.