diff --git a/README.md b/README.md
index d9d0c70..e13a0d5 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ func main() {
     // Create a request limiter per handler.
     lmt := tollbooth.NewLimiter(1, nil)
 
-    // New in version >= 7, you must explicitly define how to pick the IP address.
+    // New in version >= 8, you must explicitly define how to pick the IP address.
     lmt.SetIPLookup(limiter.IPLookup{
         Name:           "X-Real-IP",
         IndexFromRight: 0,
@@ -78,7 +78,7 @@ func main() {
     // every token bucket in it will expire 1 hour after it was initially set.
     lmt = tollbooth.NewLimiter(1, &limiter.ExpirableOptions{DefaultExpirationTTL: time.Hour})
 
-    // New in version >= 7, you must explicitly define how to pick the IP address.
+    // New in version >= 8, you must explicitly define how to pick the IP address.
     // If IP address cannot be found, rate limiter will not be activated.
     lmt.SetIPLookup(limiter.IPLookup{
         // The name of lookup method.
@@ -95,7 +95,7 @@ func main() {
         IndexFromRight: 0,
     })
 
-    // In version >= 7, lmt.SetIPLookups and lmt.GetIPLookups are removed.
+    // In version >= 8, lmt.SetIPLookups and lmt.GetIPLookups are removed.
 
     // Limit only GET and POST requests.
     lmt.SetMethods([]string{"GET", "POST"})
@@ -162,7 +162,7 @@ func main() {
     ```go
     lmt := tollbooth.NewLimiter(1, nil)
 
-    // New in version >= 7, you must explicitly define how to pick the IP address.
+    // New in version >= 8, you must explicitly define how to pick the IP address.
     lmt.SetIPLookup(limiter.IPLookup{
         Name:           "X-Forwarded-For",
         IndexFromRight: 0,
diff --git a/libstring/libstring.go b/libstring/libstring.go
index 453f254..0e6b334 100644
--- a/libstring/libstring.go
+++ b/libstring/libstring.go
@@ -6,7 +6,7 @@ import (
 	"net/http"
 	"strings"
 
-	"github.com/didip/tollbooth/v6/limiter"
+	"github.com/didip/tollbooth/v7/limiter"
 )
 
 // StringInSlice finds needle in a slice of strings.
diff --git a/tollbooth_test.go b/tollbooth_test.go
index b023f4b..e5865df 100644
--- a/tollbooth_test.go
+++ b/tollbooth_test.go
@@ -564,7 +564,10 @@ func (lm *LockMap) Add(key string, incr int64) {
 
 func TestLimitHandlerEmptyHeader(t *testing.T) {
 	lmt := limiter.New(nil).SetMax(1).SetBurst(1)
-	lmt.SetIPLookups([]string{"X-Real-IP", "RemoteAddr", "X-Forwarded-For"})
+	lmt.SetIPLookup(limiter.IPLookup{
+		Name:           "X-Real-IP",
+		IndexFromRight: 0,
+	})
 	lmt.SetMethods([]string{"POST"})
 	lmt.SetHeader("user_id", []string{})