diff --git a/client.go b/client.go
index 66d820a..046e735 100644
--- a/client.go
+++ b/client.go
@@ -148,7 +148,7 @@ type Packet struct {
 	Release     string                 `json:"release,omitempty"`
 	Tags        Tags                   `json:"tags,omitempty"`
 	Modules     map[string]string      `json:"modules,omitempty"`
-	Fingerprint string                 `json:"fingerprint,omitempty"`
+	Fingerprint []string               `json:"fingerprint,omitempty"`
 	Extra       map[string]interface{} `json:"extra,omitempty"`
 
 	Interfaces []Interface `json:"-"`
diff --git a/client_test.go b/client_test.go
index 383ee26..c1e28e3 100644
--- a/client_test.go
+++ b/client_test.go
@@ -26,14 +26,14 @@ func TestPacketJSON(t *testing.T) {
 		Logger:      "com.getsentry.raven-go.logger-test-packet-json",
 		Tags:        []Tag{Tag{"foo", "bar"}},
 		Modules:     map[string]string{"foo": "bar"},
-		Fingerprint: "a-custom-fingerprint",
+		Fingerprint: []string{"{{ default }}", "a-custom-fingerprint"},
 		Interfaces:  []Interface{&Message{Message: "foo"}},
 	}
 
 	packet.AddTags(map[string]string{"foo": "foo"})
 	packet.AddTags(map[string]string{"baz": "buzz"})
 
-	expected := `{"message":"test","event_id":"2","project":"1","timestamp":"2000-01-01T00:00:00","level":"error","logger":"com.getsentry.raven-go.logger-test-packet-json","platform":"linux","culprit":"caused_by","server_name":"host1","release":"721e41770371db95eee98ca2707686226b993eda","tags":[["foo","bar"],["foo","foo"],["baz","buzz"]],"modules":{"foo":"bar"},"fingerprint":"a-custom-fingerprint","logentry":{"message":"foo"}}`
+	expected := `{"message":"test","event_id":"2","project":"1","timestamp":"2000-01-01T00:00:00","level":"error","logger":"com.getsentry.raven-go.logger-test-packet-json","platform":"linux","culprit":"caused_by","server_name":"host1","release":"721e41770371db95eee98ca2707686226b993eda","tags":[["foo","bar"],["foo","foo"],["baz","buzz"]],"modules":{"foo":"bar"},"fingerprint":["{{ default }}","a-custom-fingerprint"],"logentry":{"message":"foo"}}`
 	actual := string(packet.JSON())
 
 	if actual != expected {
@@ -55,11 +55,11 @@ func TestPacketJSONNilInterface(t *testing.T) {
 		Logger:      "com.getsentry.raven-go.logger-test-packet-json",
 		Tags:        []Tag{Tag{"foo", "bar"}},
 		Modules:     map[string]string{"foo": "bar"},
-		Fingerprint: "a-custom-fingerprint",
+		Fingerprint: []string{"{{ default }}", "a-custom-fingerprint"},
 		Interfaces:  []Interface{&Message{Message: "foo"}, nil},
 	}
 
-	expected := `{"message":"test","event_id":"2","project":"1","timestamp":"2000-01-01T00:00:00","level":"error","logger":"com.getsentry.raven-go.logger-test-packet-json","platform":"linux","culprit":"caused_by","server_name":"host1","release":"721e41770371db95eee98ca2707686226b993eda","tags":[["foo","bar"]],"modules":{"foo":"bar"},"fingerprint":"a-custom-fingerprint","logentry":{"message":"foo"}}`
+	expected := `{"message":"test","event_id":"2","project":"1","timestamp":"2000-01-01T00:00:00","level":"error","logger":"com.getsentry.raven-go.logger-test-packet-json","platform":"linux","culprit":"caused_by","server_name":"host1","release":"721e41770371db95eee98ca2707686226b993eda","tags":[["foo","bar"]],"modules":{"foo":"bar"},"fingerprint":["{{ default }}","a-custom-fingerprint"],"logentry":{"message":"foo"}}`
 	actual := string(packet.JSON())
 
 	if actual != expected {