diff --git a/_includes/header/header-de.html b/_includes/header/header-de.html
index af744303ab..ad81d59dd5 100644
--- a/_includes/header/header-de.html
+++ b/_includes/header/header-de.html
@@ -75,7 +75,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API-Referenz</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API-Referenz</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-en.html b/_includes/header/header-en.html
index fab8ff822e..239db00a60 100644
--- a/_includes/header/header-en.html
+++ b/_includes/header/header-en.html
@@ -83,7 +83,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API reference</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API reference</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-es.html b/_includes/header/header-es.html
index cb14635b1f..4e0cd288f7 100644
--- a/_includes/header/header-es.html
+++ b/_includes/header/header-es.html
@@ -76,7 +76,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>Referencia de API</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>Referencia de API</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-fr.html b/_includes/header/header-fr.html
index 0ff39cd261..9239faee4c 100644
--- a/_includes/header/header-fr.html
+++ b/_includes/header/header-fr.html
@@ -76,7 +76,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>Référence de l'API</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>Référence de l'API</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-id.html b/_includes/header/header-id.html
index 39453c8238..1d728fe733 100644
--- a/_includes/header/header-id.html
+++ b/_includes/header/header-id.html
@@ -83,7 +83,7 @@
             </li>
             <li>
                 <ul id="application-menu" class="menu">
-                    <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>Referensi API</a>
+                    <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>Referensi API</a>
                         <ul>
                             <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                             </li>
diff --git a/_includes/header/header-it.html b/_includes/header/header-it.html
index d583ed4531..d003fcb943 100644
--- a/_includes/header/header-it.html
+++ b/_includes/header/header-it.html
@@ -73,7 +73,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>Riferimento API</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>Riferimento API</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-ja.html b/_includes/header/header-ja.html
index 699230a603..3e874c3095 100644
--- a/_includes/header/header-ja.html
+++ b/_includes/header/header-ja.html
@@ -76,7 +76,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API リファレンス</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API リファレンス</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-ko.html b/_includes/header/header-ko.html
index 241a5a4ce0..346bd67e37 100644
--- a/_includes/header/header-ko.html
+++ b/_includes/header/header-ko.html
@@ -76,7 +76,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API 참조</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API 참조</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-pt-br.html b/_includes/header/header-pt-br.html
index c0f9011ad1..ae43c40698 100644
--- a/_includes/header/header-pt-br.html
+++ b/_includes/header/header-pt-br.html
@@ -76,7 +76,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>Referência da API</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>Referência da API</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-ru.html b/_includes/header/header-ru.html
index dc97dec5f5..112b00434c 100644
--- a/_includes/header/header-ru.html
+++ b/_includes/header/header-ru.html
@@ -76,7 +76,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-sk.html b/_includes/header/header-sk.html
index 4976d78398..1a21a62435 100644
--- a/_includes/header/header-sk.html
+++ b/_includes/header/header-sk.html
@@ -76,7 +76,7 @@
             </li>
             <li>
                 <ul id="application-menu" class="menu">
-                    <li><a href="/{{ page.lang }}/4x/api.html" {% if page.menu == 'api' %} class="active" {% endif %}>API referenčná príručka</a>
+                    <li><a href="/{{ page.lang }}/5x/api.html" {% if page.menu == 'api' %} class="active" {% endif %}>API referenčná príručka</a>
                         <ul>
                             <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                             </li>
diff --git a/_includes/header/header-th.html b/_includes/header/header-th.html
index 148d1db1f8..f8b0f63052 100644
--- a/_includes/header/header-th.html
+++ b/_includes/header/header-th.html
@@ -76,7 +76,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>การอ้างอิง API</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>การอ้างอิง API</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-tr.html b/_includes/header/header-tr.html
index 5b3740eac4..979eace653 100644
--- a/_includes/header/header-tr.html
+++ b/_includes/header/header-tr.html
@@ -80,7 +80,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API Kaynak</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API Kaynak</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-uk.html b/_includes/header/header-uk.html
index da3da08e4f..edd080c4c2 100644
--- a/_includes/header/header-uk.html
+++ b/_includes/header/header-uk.html
@@ -75,7 +75,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>Довідник API</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>Довідник API</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-uz.html b/_includes/header/header-uz.html
index b022ae0107..13e4527a13 100644
--- a/_includes/header/header-uz.html
+++ b/_includes/header/header-uz.html
@@ -76,7 +76,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API qo'llanma</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API qo'llanma</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-zh-cn.html b/_includes/header/header-zh-cn.html
index c953f13b40..99e5c3c07d 100644
--- a/_includes/header/header-zh-cn.html
+++ b/_includes/header/header-zh-cn.html
@@ -76,7 +76,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API 参考</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API 参考</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>
diff --git a/_includes/header/header-zh-tw.html b/_includes/header/header-zh-tw.html
index a00ba0cbde..066976ffca 100644
--- a/_includes/header/header-zh-tw.html
+++ b/_includes/header/header-zh-tw.html
@@ -76,7 +76,7 @@
           </li>
           <li>
               <ul id="application-menu" class="menu">
-                  <li><a href="/{{ page.lang }}/4x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API 參照</a>
+                  <li><a href="/{{ page.lang }}/5x/api.html"{% if page.menu == 'api' %} class="active"{% endif %}>API 參照</a>
                       <ul>
                           <li><a href="/{{ page.lang }}/5x/api.html">5.x</a>
                           </li>