diff --git a/require/require.go b/require/require.go
index 22784c1..aebb08d 100644
--- a/require/require.go
+++ b/require/require.go
@@ -7,6 +7,7 @@ package require
 
 import (
 	assert "github.com/stretchr/testify/assert"
+	"io"
 	http "net/http"
 	url "net/url"
 	time "time"
@@ -488,11 +489,11 @@ func Greaterf(t TestingT, e1 interface{}, e2 interface{}, msg string, args ...in
 //  assert.HTTPBodyContains(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
 //
 // Returns whether the assertion was successful (true) or not (false).
-func HTTPBodyContains(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) {
+func HTTPBodyContains(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, body io.Reader, str interface{}, msgAndArgs ...interface{}) {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
 	}
-	if assert.HTTPBodyContains(t, handler, method, url, values, str, msgAndArgs...) {
+	if assert.HTTPBodyContains(t, handler, method, url, values, body, str, msgAndArgs...) {
 		return
 	}
 	t.FailNow()
@@ -504,11 +505,11 @@ func HTTPBodyContains(t TestingT, handler http.HandlerFunc, method string, url s
 //  assert.HTTPBodyContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
 //
 // Returns whether the assertion was successful (true) or not (false).
-func HTTPBodyContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) {
+func HTTPBodyContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, body io.Reader, str interface{}, msg string, args ...interface{}) {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
 	}
-	if assert.HTTPBodyContainsf(t, handler, method, url, values, str, msg, args...) {
+	if assert.HTTPBodyContainsf(t, handler, method, url, values, body, str, msg, args...) {
 		return
 	}
 	t.FailNow()
@@ -520,11 +521,11 @@ func HTTPBodyContainsf(t TestingT, handler http.HandlerFunc, method string, url
 //  assert.HTTPBodyNotContains(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
 //
 // Returns whether the assertion was successful (true) or not (false).
-func HTTPBodyNotContains(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) {
+func HTTPBodyNotContains(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, body io.Reader, str interface{}, msgAndArgs ...interface{}) {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
 	}
-	if assert.HTTPBodyNotContains(t, handler, method, url, values, str, msgAndArgs...) {
+	if assert.HTTPBodyNotContains(t, handler, method, url, values, body, str, msgAndArgs...) {
 		return
 	}
 	t.FailNow()
@@ -536,11 +537,11 @@ func HTTPBodyNotContains(t TestingT, handler http.HandlerFunc, method string, ur
 //  assert.HTTPBodyNotContainsf(t, myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
 //
 // Returns whether the assertion was successful (true) or not (false).
-func HTTPBodyNotContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) {
+func HTTPBodyNotContainsf(t TestingT, handler http.HandlerFunc, method string, url string, values url.Values, body io.Reader, str interface{}, msg string, args ...interface{}) {
 	if h, ok := t.(tHelper); ok {
 		h.Helper()
 	}
-	if assert.HTTPBodyNotContainsf(t, handler, method, url, values, str, msg, args...) {
+	if assert.HTTPBodyNotContainsf(t, handler, method, url, values, body, str, msg, args...) {
 		return
 	}
 	t.FailNow()
diff --git a/require/require_forward.go b/require/require_forward.go
index b556d5d..2b50528 100644
--- a/require/require_forward.go
+++ b/require/require_forward.go
@@ -7,6 +7,7 @@ package require
 
 import (
 	assert "github.com/stretchr/testify/assert"
+	"io"
 	http "net/http"
 	url "net/url"
 	time "time"
@@ -386,11 +387,11 @@ func (a *Assertions) Greaterf(e1 interface{}, e2 interface{}, msg string, args .
 //  a.HTTPBodyContains(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
 //
 // Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) HTTPBodyContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) {
+func (a *Assertions) HTTPBodyContains(handler http.HandlerFunc, method string, url string, values url.Values, body io.Reader, str interface{}, msgAndArgs ...interface{}) {
 	if h, ok := a.t.(tHelper); ok {
 		h.Helper()
 	}
-	HTTPBodyContains(a.t, handler, method, url, values, str, msgAndArgs...)
+	HTTPBodyContains(a.t, handler, method, url, values, body, str, msgAndArgs...)
 }
 
 // HTTPBodyContainsf asserts that a specified handler returns a
@@ -399,11 +400,11 @@ func (a *Assertions) HTTPBodyContains(handler http.HandlerFunc, method string, u
 //  a.HTTPBodyContainsf(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
 //
 // Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) HTTPBodyContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) {
+func (a *Assertions) HTTPBodyContainsf(handler http.HandlerFunc, method string, url string, values url.Values, body io.Reader, str interface{}, msg string, args ...interface{}) {
 	if h, ok := a.t.(tHelper); ok {
 		h.Helper()
 	}
-	HTTPBodyContainsf(a.t, handler, method, url, values, str, msg, args...)
+	HTTPBodyContainsf(a.t, handler, method, url, values, body, str, msg, args...)
 }
 
 // HTTPBodyNotContains asserts that a specified handler returns a
@@ -412,11 +413,11 @@ func (a *Assertions) HTTPBodyContainsf(handler http.HandlerFunc, method string,
 //  a.HTTPBodyNotContains(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky")
 //
 // Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) HTTPBodyNotContains(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msgAndArgs ...interface{}) {
+func (a *Assertions) HTTPBodyNotContains(handler http.HandlerFunc, method string, url string, values url.Values, body io.Reader, str interface{}, msgAndArgs ...interface{}) {
 	if h, ok := a.t.(tHelper); ok {
 		h.Helper()
 	}
-	HTTPBodyNotContains(a.t, handler, method, url, values, str, msgAndArgs...)
+	HTTPBodyNotContains(a.t, handler, method, url, values, body, str, msgAndArgs...)
 }
 
 // HTTPBodyNotContainsf asserts that a specified handler returns a
@@ -425,11 +426,11 @@ func (a *Assertions) HTTPBodyNotContains(handler http.HandlerFunc, method string
 //  a.HTTPBodyNotContainsf(myHandler, "GET", "www.google.com", nil, "I'm Feeling Lucky", "error message %s", "formatted")
 //
 // Returns whether the assertion was successful (true) or not (false).
-func (a *Assertions) HTTPBodyNotContainsf(handler http.HandlerFunc, method string, url string, values url.Values, str interface{}, msg string, args ...interface{}) {
+func (a *Assertions) HTTPBodyNotContainsf(handler http.HandlerFunc, method string, url string, values url.Values, body io.Reader, str interface{}, msg string, args ...interface{}) {
 	if h, ok := a.t.(tHelper); ok {
 		h.Helper()
 	}
-	HTTPBodyNotContainsf(a.t, handler, method, url, values, str, msg, args...)
+	HTTPBodyNotContainsf(a.t, handler, method, url, values, body, str, msg, args...)
 }
 
 // HTTPError asserts that a specified handler returns an error status code.