diff --git a/api/api.go b/api/api.go
index e54d37bb9..bb553b645 100644
--- a/api/api.go
+++ b/api/api.go
@@ -155,6 +155,8 @@ type Config struct {
 	//
 	// TLSConfig is ignored if HttpClient is set.
 	TLSConfig *TLSConfig
+
+	Headers http.Header
 }
 
 // ClientConfig copies the configuration with a new client address, region, and
@@ -527,6 +529,7 @@ type request struct {
 	body   io.Reader
 	obj    interface{}
 	ctx    context.Context
+	header http.Header
 }
 
 // setQueryOptions is used to annotate the request with
@@ -612,6 +615,8 @@ func (r *request) toHTTP() (*http.Request, error) {
 		return nil, err
 	}
 
+	req.Header = r.header
+
 	// Optionally configure HTTP basic authentication
 	if r.url.User != nil {
 		username := r.url.User.Username()
@@ -649,6 +654,7 @@ func (c *Client) newRequest(method, path string) (*request, error) {
 			Path:    u.Path,
 			RawPath: u.RawPath,
 		},
+		header: make(http.Header),
 		params: make(map[string][]string),
 	}
 	if c.config.Region != "" {
@@ -671,6 +677,10 @@ func (c *Client) newRequest(method, path string) (*request, error) {
 		}
 	}
 
+	if c.config.Headers != nil {
+		r.header = c.config.Headers
+	}
+
 	return r, nil
 }
 
diff --git a/api/api_test.go b/api/api_test.go
index d46098796..0048ecdfe 100644
--- a/api/api_test.go
+++ b/api/api_test.go
@@ -341,6 +341,22 @@ func TestParseWriteMeta(t *testing.T) {
 	}
 }
 
+func TestClientHeader(t *testing.T) {
+	t.Parallel()
+	c, s := makeClient(t, func(c *Config) {
+		c.Headers = http.Header{
+			"Hello": []string{"World"},
+		}
+	}, nil)
+	defer s.Stop()
+
+	r, _ := c.newRequest("GET", "/v1/jobs")
+
+	if r.header.Get("Hello") != "World" {
+		t.Fatalf("bad: %v", r.header)
+	}
+}
+
 func TestQueryString(t *testing.T) {
 	t.Parallel()
 	c, s := makeClient(t, nil, nil)
diff --git a/vendor/github.com/hashicorp/nomad/api/api.go b/vendor/github.com/hashicorp/nomad/api/api.go
index e54d37bb9..bb553b645 100644
--- a/vendor/github.com/hashicorp/nomad/api/api.go
+++ b/vendor/github.com/hashicorp/nomad/api/api.go
@@ -155,6 +155,8 @@ type Config struct {
 	//
 	// TLSConfig is ignored if HttpClient is set.
 	TLSConfig *TLSConfig
+
+	Headers http.Header
 }
 
 // ClientConfig copies the configuration with a new client address, region, and
@@ -527,6 +529,7 @@ type request struct {
 	body   io.Reader
 	obj    interface{}
 	ctx    context.Context
+	header http.Header
 }
 
 // setQueryOptions is used to annotate the request with
@@ -612,6 +615,8 @@ func (r *request) toHTTP() (*http.Request, error) {
 		return nil, err
 	}
 
+	req.Header = r.header
+
 	// Optionally configure HTTP basic authentication
 	if r.url.User != nil {
 		username := r.url.User.Username()
@@ -649,6 +654,7 @@ func (c *Client) newRequest(method, path string) (*request, error) {
 			Path:    u.Path,
 			RawPath: u.RawPath,
 		},
+		header: make(http.Header),
 		params: make(map[string][]string),
 	}
 	if c.config.Region != "" {
@@ -671,6 +677,10 @@ func (c *Client) newRequest(method, path string) (*request, error) {
 		}
 	}
 
+	if c.config.Headers != nil {
+		r.header = c.config.Headers
+	}
+
 	return r, nil
 }