diff --git a/.DS_Store b/.DS_Store
index c9e2757..db14af5 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/README.md b/README.md
index 2f647ea..7c05151 100644
--- a/README.md
+++ b/README.md
@@ -51,7 +51,9 @@ tarteaucitron.init({
 
     //"cookieDomain": ".my-multisite-domaine.fr", /* Shared cookie for subdomain website */
 
-    "readmoreLink": "/cookiespolicy" /* Change the default readmore link pointing to tarteaucitron.io */
+    "readmoreLink": "/cookiespolicy", /* Change the default readmore link pointing to tarteaucitron.io */
+    
+    "mandatory": false /* Show a message about mandatory cookies */
 });
 </script>
 ```
diff --git a/lang/tarteaucitron.bg.js b/lang/tarteaucitron.bg.js
index 111664a..11ccb1e 100644
--- a/lang/tarteaucitron.bg.js
+++ b/lang/tarteaucitron.bg.js
@@ -72,5 +72,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Други",
         "details": "Services to display web content."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.cn.js b/lang/tarteaucitron.cn.js
index debe951..3de0d26 100644
--- a/lang/tarteaucitron.cn.js
+++ b/lang/tarteaucitron.cn.js
@@ -70,5 +70,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "其他",
         "details": "旨在显示网页内容的服务。"
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.cs.js b/lang/tarteaucitron.cs.js
index 429f841..15d482b 100644
--- a/lang/tarteaucitron.cs.js
+++ b/lang/tarteaucitron.cs.js
@@ -72,5 +72,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Jiný",
         "details": "Služby pro zobrazení webového obsahu."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.da.js b/lang/tarteaucitron.da.js
index 385f7b0..698aa87 100644
--- a/lang/tarteaucitron.da.js
+++ b/lang/tarteaucitron.da.js
@@ -73,5 +73,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Andet",
         "details": "Tjenester til visning af webindhold."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.de.js b/lang/tarteaucitron.de.js
index 3ae1414..2c8919a 100644
--- a/lang/tarteaucitron.de.js
+++ b/lang/tarteaucitron.de.js
@@ -72,5 +72,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Andere",
         "details": "Dienste zum Anzeigen von Web-Inhalten."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.el.js b/lang/tarteaucitron.el.js
index 9d9a285..d754416 100644
--- a/lang/tarteaucitron.el.js
+++ b/lang/tarteaucitron.el.js
@@ -72,5 +72,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Λοιπές υπηρεσίες",
         "details": "Υπηρεσίες που παρουσιάζουν άλλο περιεχόμενο."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.en.js b/lang/tarteaucitron.en.js
index 3f6e9c6..495d92f 100644
--- a/lang/tarteaucitron.en.js
+++ b/lang/tarteaucitron.en.js
@@ -73,5 +73,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Other",
         "details": "Services to display web content."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.es.js b/lang/tarteaucitron.es.js
index 51c2694..11c509d 100644
--- a/lang/tarteaucitron.es.js
+++ b/lang/tarteaucitron.es.js
@@ -72,5 +72,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Otro",
         "details": "Servicios para mostrar contenido web."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.fi.js b/lang/tarteaucitron.fi.js
index 5847084..20201c1 100644
--- a/lang/tarteaucitron.fi.js
+++ b/lang/tarteaucitron.fi.js
@@ -76,5 +76,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Muut",
         "details": "Palvelut web-sisältöjen näyttämiseen."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.fr.js b/lang/tarteaucitron.fr.js
index de05159..c5ed091 100644
--- a/lang/tarteaucitron.fr.js
+++ b/lang/tarteaucitron.fr.js
@@ -74,5 +74,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Autre",
         "details": "Services visant à afficher du contenu web."
-    }
+    },
+    
+    "mandatoryTitle": "Cookies obligatoires",
+    "mandatoryText": "Ce site utilise des cookies nécessaires à son bon fonctionnement qui ne peuvent pas être désactivés."
 };
diff --git a/lang/tarteaucitron.hu.js b/lang/tarteaucitron.hu.js
index 55336d6..47a00ce 100644
--- a/lang/tarteaucitron.hu.js
+++ b/lang/tarteaucitron.hu.js
@@ -73,5 +73,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Ostatné",
         "details": "Služby na zobrazovanie webového obsahu."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.it.js b/lang/tarteaucitron.it.js
index 7b47331..273edf8 100644
--- a/lang/tarteaucitron.it.js
+++ b/lang/tarteaucitron.it.js
@@ -72,5 +72,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Altro",
         "details": "Servizi per visualizzare contenuti web."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.ja.js b/lang/tarteaucitron.ja.js
index fc4893d..80d54d2 100644
--- a/lang/tarteaucitron.ja.js
+++ b/lang/tarteaucitron.ja.js
@@ -73,5 +73,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Other",
         "details": "Services to display web content."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.nl.js b/lang/tarteaucitron.nl.js
index e5a98fe..6b82edf 100644
--- a/lang/tarteaucitron.nl.js
+++ b/lang/tarteaucitron.nl.js
@@ -72,5 +72,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Overig",
         "details": "Diensten om webinhoud weer te geven."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.oc.js b/lang/tarteaucitron.oc.js
index 190ef14..a741fb2 100644
--- a/lang/tarteaucitron.oc.js
+++ b/lang/tarteaucitron.oc.js
@@ -74,5 +74,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Autre",
         "details": "Servicis que cèrcan a afichar de contengut web."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.pl.js b/lang/tarteaucitron.pl.js
index 4d55cd1..abebe0c 100644
--- a/lang/tarteaucitron.pl.js
+++ b/lang/tarteaucitron.pl.js
@@ -72,5 +72,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Inne",
         "details": "Usługi do wyświetlania treści internetowych."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.pt.js b/lang/tarteaucitron.pt.js
index 6ec6e64..608bde7 100644
--- a/lang/tarteaucitron.pt.js
+++ b/lang/tarteaucitron.pt.js
@@ -70,5 +70,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "De outros",
         "details": "Serviços para exibir conteúdo da web."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.ro.js b/lang/tarteaucitron.ro.js
index 5611dfe..dd597bc 100644
--- a/lang/tarteaucitron.ro.js
+++ b/lang/tarteaucitron.ro.js
@@ -72,5 +72,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Alte",
         "details": "Servicii pentru afișarea conținutului web."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.ru.js b/lang/tarteaucitron.ru.js
index d5f30b5..db1bbde 100644
--- a/lang/tarteaucitron.ru.js
+++ b/lang/tarteaucitron.ru.js
@@ -72,5 +72,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Другие",
         "details": "Службы для отображения веб-контента."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.se.js b/lang/tarteaucitron.se.js
index 4814acc..f3145c7 100644
--- a/lang/tarteaucitron.se.js
+++ b/lang/tarteaucitron.se.js
@@ -73,5 +73,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Övrig",
         "details": "Tjänster för att visa webbinnehåll."
-    }
-};
\ No newline at end of file
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
+};
diff --git a/lang/tarteaucitron.sk.js b/lang/tarteaucitron.sk.js
index e2479f9..a985844 100644
--- a/lang/tarteaucitron.sk.js
+++ b/lang/tarteaucitron.sk.js
@@ -148,6 +148,9 @@ tarteaucitron.lang = {
 
         "details": "Služby na zobrazovanie webového obsahu."
 
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 
 };
diff --git a/lang/tarteaucitron.tr.js b/lang/tarteaucitron.tr.js
index e647433..7dfdde2 100644
--- a/lang/tarteaucitron.tr.js
+++ b/lang/tarteaucitron.tr.js
@@ -76,5 +76,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "diğer\n",
         "details": "Web içeriğini görüntüleme hizmetleri."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/lang/tarteaucitron.vi.js b/lang/tarteaucitron.vi.js
index 89cd12c..8771adc 100644
--- a/lang/tarteaucitron.vi.js
+++ b/lang/tarteaucitron.vi.js
@@ -73,5 +73,8 @@ tarteaucitron.lang = {
     "other": {
         "title": "Dịch vụ khác",
         "details": "Dịch vụ hiển thị nội dung web."
-    }
+    },
+    
+    "mandatoryTitle": "Mandatory cookies",
+    "mandatoryText": "This site uses cookies necessary for its proper functioning which cannot be deactivated."
 };
diff --git a/tarteaucitron.js b/tarteaucitron.js
index c4ab692..6acfabb 100644
--- a/tarteaucitron.js
+++ b/tarteaucitron.js
@@ -17,7 +17,7 @@ var scripts = document.getElementsByTagName('script'),
 
 
 var tarteaucitron = {
-    "version": 20200501,
+    "version": 20200521,
     "cdn": cdn,
     "user": {},
     "lang": {},
@@ -214,7 +214,8 @@ var tarteaucitron = {
                 "moreInfoLink": true,
                 "privacyUrl": "",
                 "useExternalCss": false,
-                "useExternalJs": false
+                "useExternalJs": false,
+                "mandatory": false
             },
             params = tarteaucitron.parameters;
 
@@ -321,6 +322,28 @@ var tarteaucitron = {
                 html += '      </div>';
                 html += '      <div class="tarteaucitronBorder">';
                 html += '         <div class="clear"></div><ul>';
+                                            
+                                            
+                if (tarteaucitron.parameters.mandatory == true) {
+                   html += '<li id="tarteaucitronServicesTitle_mandatory">';
+                   html += '<div class="tarteaucitronTitle">';
+                   html += '   <button type="button">&nbsp; ' + tarteaucitron.lang.mandatoryTitle + '</button>';
+                   html += '</div>';
+                   html += '<ul id="tarteaucitronServices_mandatory">';
+                   html += '<li class="tarteaucitronLine">';
+                   html += '   <div class="tarteaucitronName">';
+                   html += '       <span class="tarteaucitronH3" role="heading" aria-level="3">' + tarteaucitron.lang.mandatoryText + '</span>';
+                   html += '       <span class="tarteaucitronListCookies"></span><br/>';
+                   html += '   </div>';
+                   html += '   <div class="tarteaucitronAsk">';
+                   html += '       <button type="button" class="tarteaucitronAllow">';
+                   html += '           &#10003; ' + tarteaucitron.lang.allow;
+                   html += '       </button> ';
+                   html += '   </div>';
+                   html += '</li>';
+                   html += '</ul></li>';
+                }
+
                 for (i = 0; i < cat.length; i += 1) {
                     html += '         <li id="tarteaucitronServicesTitle_' + cat[i] + '" class="tarteaucitronHidden">';
                     html += '            <div class="tarteaucitronTitle">';
@@ -1412,8 +1435,6 @@ var tarteaucitron = {
             return 'es_ES';
         } else if (userLanguage === 'it') {
             return 'it_IT';
-        } else if (userLanguage === 'oc') {
-            return 'oc_FR';            
         } else if (userLanguage === 'pt') {
             return 'pt_PT';
         } else if (userLanguage === 'nl') {