diff --git a/.travis.yml b/.travis.yml
index 33f9cb5d21..9a3f183893 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -33,7 +33,7 @@ cache:
 env:
   global:
     # If changing this number, please also change it in `testing/testing.go`.
-    - STRIPE_MOCK_VERSION=0.56.0
+    - STRIPE_MOCK_VERSION=0.57.0
 
 go:
   - "1.9.x"
diff --git a/radar/earlyfraudwarning/client.go b/radar/earlyfraudwarning/client.go
new file mode 100644
index 0000000000..564208641a
--- /dev/null
+++ b/radar/earlyfraudwarning/client.go
@@ -0,0 +1,65 @@
+// Package earlyfraudwarning provides API functions related to early fraud
+// warnings.
+//
+// For more details, see: https://stripe.com/docs/api/early_fraud_warnings?lang=go
+package earlyfraudwarning
+
+import (
+	"net/http"
+
+	stripe "github.com/stripe/stripe-go"
+	"github.com/stripe/stripe-go/form"
+)
+
+// Client is used to interact with the /radar/early_fraud_warnings API.
+type Client struct {
+	B   stripe.Backend
+	Key string
+}
+
+// Get returns the details of an early fraud warning.
+func Get(id string, params *stripe.RadarEarlyFraudWarningParams) (*stripe.RadarEarlyFraudWarning, error) {
+	return getC().Get(id, params)
+}
+
+// Get returns the details of an early fraud warning.
+func (c Client) Get(id string, params *stripe.RadarEarlyFraudWarningParams) (*stripe.RadarEarlyFraudWarning, error) {
+	path := stripe.FormatURLPath("/v1/issuer_fraud_records/%s", id)
+	ifr := &stripe.RadarEarlyFraudWarning{}
+	err := c.B.Call(http.MethodGet, path, c.Key, params, ifr)
+	return ifr, err
+}
+
+// List returns a list of early fraud warnings.
+func List(params *stripe.RadarEarlyFraudWarningListParams) *Iter {
+	return getC().List(params)
+}
+
+// List returns a list of early fraud warnings.
+func (c Client) List(listParams *stripe.RadarEarlyFraudWarningListParams) *Iter {
+	return &Iter{stripe.GetIter(listParams, func(p *stripe.Params, b *form.Values) ([]interface{}, stripe.ListMeta, error) {
+		list := &stripe.RadarEarlyFraudWarningList{}
+		err := c.B.CallRaw(http.MethodGet, "/v1/issuer_fraud_records", c.Key, b, p, list)
+
+		ret := make([]interface{}, len(list.Values))
+		for i, v := range list.Values {
+			ret[i] = v
+		}
+
+		return ret, list.ListMeta, err
+	})}
+}
+
+// Iter is an iterator for early fraud warnings.
+type Iter struct {
+	*stripe.Iter
+}
+
+// RadarEarlyFraudWarning returns the early fraud warning which the iterator is currently pointing to.
+func (i *Iter) RadarEarlyFraudWarning() *stripe.RadarEarlyFraudWarning {
+	return i.Current().(*stripe.RadarEarlyFraudWarning)
+}
+
+func getC() Client {
+	return Client{stripe.GetBackend(stripe.APIBackend), stripe.Key}
+}
diff --git a/radar/earlyfraudwarning/client_test.go b/radar/earlyfraudwarning/client_test.go
new file mode 100644
index 0000000000..3f4ae08b6d
--- /dev/null
+++ b/radar/earlyfraudwarning/client_test.go
@@ -0,0 +1,35 @@
+package earlyfraudwarning
+
+import (
+	"testing"
+
+	assert "github.com/stretchr/testify/require"
+	stripe "github.com/stripe/stripe-go"
+	_ "github.com/stripe/stripe-go/testing"
+)
+
+func TestRadarEarlyFraudWarningGet(t *testing.T) {
+	ifr, err := Get("ifr_123", nil)
+	assert.Nil(t, err)
+	assert.NotNil(t, ifr)
+}
+
+func TestRadarEarlyFraudWarningList(t *testing.T) {
+	i := List(&stripe.RadarEarlyFraudWarningListParams{})
+
+	// Verify that we can get at least one issuer fraud record
+	assert.True(t, i.Next())
+	assert.Nil(t, i.Err())
+	assert.NotNil(t, i.RadarEarlyFraudWarning())
+}
+
+func TestRadarEarlyFraudWarningListByChargeID(t *testing.T) {
+	i := List(&stripe.RadarEarlyFraudWarningListParams{
+		Charge: stripe.String("ch_123"),
+	})
+
+	// Verify that we can get at least one issuer fraud record
+	assert.True(t, i.Next())
+	assert.Nil(t, i.Err())
+	assert.NotNil(t, i.RadarEarlyFraudWarning())
+}
diff --git a/radar_earlyfraudwarning.go b/radar_earlyfraudwarning.go
new file mode 100644
index 0000000000..f2350d9e17
--- /dev/null
+++ b/radar_earlyfraudwarning.go
@@ -0,0 +1,48 @@
+package stripe
+
+// RadarEarlyFraudWarningFraudType are strings that map to the type of fraud labelled by the issuer.
+type RadarEarlyFraudWarningFraudType string
+
+// List of values that RadarEarlyFraudWarningFraudType can take.
+const (
+	RadarEarlyFraudWarningFraudTypeCardNeverReceived         RadarEarlyFraudWarningFraudType = "card_never_received"
+	RadarEarlyFraudWarningFraudTypeFraudulentCardApplication RadarEarlyFraudWarningFraudType = "fraudulent_card_application"
+	RadarEarlyFraudWarningFraudTypeMadeWithCounterfeitCard   RadarEarlyFraudWarningFraudType = "made_with_counterfeit_card"
+	RadarEarlyFraudWarningFraudTypeMadeWithLostCard          RadarEarlyFraudWarningFraudType = "made_with_lost_card"
+	RadarEarlyFraudWarningFraudTypeMadeWithStolenCard        RadarEarlyFraudWarningFraudType = "made_with_stolen_card"
+	RadarEarlyFraudWarningFraudTypeMisc                      RadarEarlyFraudWarningFraudType = "misc"
+	RadarEarlyFraudWarningFraudTypeUnauthorizedUseOfCard     RadarEarlyFraudWarningFraudType = "unauthorized_use_of_card"
+)
+
+// RadarEarlyFraudWarningParams is the set of parameters that can be used when
+// retrieving early fraud warnings. For more details see
+// https://stripe.com/docs/api/early_fraud_warnings/retrieve.
+type RadarEarlyFraudWarningParams struct {
+	Params `form:"*"`
+}
+
+// RadarEarlyFraudWarningListParams is the set of parameters that can be used when
+// listing early fraud warnings. For more details see
+// https://stripe.com/docs/api/early_fraud_warnings/list.
+type RadarEarlyFraudWarningListParams struct {
+	ListParams `form:"*"`
+	Charge     *string `form:"charge"`
+}
+
+// RadarEarlyFraudWarningList is a list of early fraud warnings as retrieved from a
+// list endpoint.
+type RadarEarlyFraudWarningList struct {
+	ListMeta
+	Values []*RadarEarlyFraudWarning `json:"data"`
+}
+
+// RadarEarlyFraudWarning is the resource representing an early fraud warning. For
+// more details see https://stripe.com/docs/api/early_fraud_warnings/object.
+type RadarEarlyFraudWarning struct {
+	Actionable bool                            `json:"actionable"`
+	Charge     *Charge                         `json:"charge"`
+	Created    int64                           `json:"created"`
+	FraudType  RadarEarlyFraudWarningFraudType `json:"fraud_type"`
+	ID         string                          `json:"id"`
+	Livemode   bool                            `json:"livemode"`
+}
diff --git a/testing/testing.go b/testing/testing.go
index b9ab2cfc03..39059712a4 100644
--- a/testing/testing.go
+++ b/testing/testing.go
@@ -25,7 +25,7 @@ const (
 	// added in a more recent version of stripe-mock, we can show people a
 	// better error message instead of the test suite crashing with a bunch of
 	// confusing 404 errors or the like.
-	MockMinimumVersion = "0.56.0"
+	MockMinimumVersion = "0.57.0"
 
 	// TestMerchantID is a token that can be used to represent a merchant ID in
 	// simple tests.