diff --git a/README.md b/README.md
index 003fb59..e5e34c2 100644
--- a/README.md
+++ b/README.md
@@ -25,8 +25,8 @@
     "math/rand"
     "time"
 
-    "github.com/vbauerster/mpb/v4"
-    "github.com/vbauerster/mpb/v4/decor"
+    "github.com/vbauerster/mpb/v5"
+    "github.com/vbauerster/mpb/v5/decor"
 )
 
 func main() {
@@ -53,10 +53,13 @@
     // simulating some work
     max := 100 * time.Millisecond
     for i := 0; i < total; i++ {
+        // start variable is solely for EWMA calculation
+        // EWMA's unit of measure is an iteration's taken time
         start := time.Now()
         time.Sleep(time.Duration(rand.Intn(10)+1) * max / 10)
-        // since ewma decorator is used, we need to pass time.Since(start)
-        bar.Increment(time.Since(start))
+        bar.Increment()
+        // we need to call DecoratorEwmaUpdate to fulfill ewma decorator's contract
+        bar.DecoratorEwmaUpdate(time.Since(start))
     }
     // wait for our bar to complete and flush
     p.Wait()
@@ -94,10 +97,13 @@
             rng := rand.New(rand.NewSource(time.Now().UnixNano()))
             max := 100 * time.Millisecond
             for i := 0; i < total; i++ {
+                // start variable is solely for EWMA calculation
+                // EWMA's unit of measure is an iteration's taken time
                 start := time.Now()
                 time.Sleep(time.Duration(rng.Intn(10)+1) * max / 10)
-                // since ewma decorator is used, we need to pass time.Since(start)
-                bar.Increment(time.Since(start))
+                bar.Increment()
+                // we need to call DecoratorEwmaUpdate to fulfill ewma decorator's contract
+                bar.DecoratorEwmaUpdate(time.Since(start))
             }
         }()
     }