diff --git a/static/i18n_resources_list.txt b/static/i18n_resources_list.txt
index 1f2d55283..56e1dc610 100644
--- a/static/i18n_resources_list.txt
+++ b/static/i18n_resources_list.txt
@@ -2,15 +2,20 @@ skin/i18n/ar.json
 skin/i18n/bn.json
 skin/i18n/cs.json
 skin/i18n/de.json
+skin/i18n/dga.json
+skin/i18n/el.json
 skin/i18n/en.json
 skin/i18n/fr.json
 skin/i18n/he.json
 skin/i18n/hy.json
+skin/i18n/ia.json
 skin/i18n/it.json
 skin/i18n/ja.json
 skin/i18n/ko.json
 skin/i18n/ku-latn.json
+skin/i18n/lb.json
 skin/i18n/mk.json
+skin/i18n/nl.json
 skin/i18n/nqo.json
 skin/i18n/pl.json
 skin/i18n/ru.json
diff --git a/static/skin/languages.js b/static/skin/languages.js
index 1ff325f1c..161a7b900 100644
--- a/static/skin/languages.js
+++ b/static/skin/languages.js
@@ -1,4 +1,7 @@
 const uiLanguages = [
+  {
+    "الإنجليزية": "ar"
+  },
   {
     "বাংলা": "bn"
   },
@@ -32,6 +35,9 @@ const uiLanguages = [
   {
     "kurdî": "ku-latn"
   },
+  {
+    "Lëtzebuergesch": "lb"
+  },
   {
     "македонски": "mk"
   },
@@ -50,6 +56,9 @@ const uiLanguages = [
   {
     "slovenčina": "sk"
   },
+  {
+    "slovenščina": "sl"
+  },
   {
     "Svenska": "sv"
   },
diff --git a/test/server.cpp b/test/server.cpp
index 21c79ba18..0b3b9e414 100644
--- a/test/server.cpp
+++ b/test/server.cpp
@@ -145,7 +145,7 @@ const ResourceCollection resources200Uncompressible{
   { DYNAMIC_CONTENT, "/ROOT%23%3F/skin/search_results.css" },
   { STATIC_CONTENT,  "/ROOT%23%3F/skin/search_results.css?cacheid=76d39c84" },
   { DYNAMIC_CONTENT, "/ROOT%23%3F/skin/languages.js" },
-  { STATIC_CONTENT, "/ROOT%23%3F/skin/languages.js?cacheid=fe100348" },
+  { STATIC_CONTENT, "/ROOT%23%3F/skin/languages.js?cacheid=b00b12db" },
 
   { ZIM_CONTENT,     "/ROOT%23%3F/raw/zimfile/meta/Title" },
   { ZIM_CONTENT,     "/ROOT%23%3F/raw/zimfile/meta/Description" },
@@ -281,7 +281,7 @@ R"EXPECTEDRESULT(      href="/ROOT%23%3F/skin/index.css?cacheid=f0ee124c"
         src: url("/ROOT%23%3F/skin/fonts/Poppins.ttf?cacheid=af705837") format("truetype");
           src: url("/ROOT%23%3F/skin/fonts/Roboto.ttf?cacheid=84d10248") format("truetype");
     <script type="module" src="/ROOT%23%3F/skin/i18n.js?cacheid=2cf0f8c5" defer></script>
-    <script type="text/javascript" src="/ROOT%23%3F/skin/languages.js?cacheid=fe100348" defer></script>
+    <script type="text/javascript" src="/ROOT%23%3F/skin/languages.js?cacheid=b00b12db" defer></script>
     <script src="/ROOT%23%3F/skin/isotope.pkgd.min.js?cacheid=2e48d392" defer></script>
     <script src="/ROOT%23%3F/skin/iso6391To3.js?cacheid=ecde2bb3"></script>
     <script type="text/javascript" src="/ROOT%23%3F/skin/index.js?cacheid=042058df" defer></script>
@@ -306,7 +306,7 @@ R"EXPECTEDRESULT(                                <img src="${root}/skin/download
 R"EXPECTEDRESULT(    <link type="text/css" href="./skin/taskbar.css?cacheid=8fc2cc83" rel="Stylesheet" />
     <link type="text/css" href="./skin/css/autoComplete.css?cacheid=08951e06" rel="Stylesheet" />
     <script type="module" src="./skin/i18n.js?cacheid=2cf0f8c5" defer></script>
-    <script type="text/javascript" src="./skin/languages.js?cacheid=fe100348" defer></script>
+    <script type="text/javascript" src="./skin/languages.js?cacheid=b00b12db" defer></script>
     <script type="text/javascript" src="./skin/viewer.js?cacheid=b9a574d4" defer></script>
     <script type="text/javascript" src="./skin/autoComplete.min.js?cacheid=1191aaaf"></script>
       const blankPageUrl = root + "/skin/blank.html?cacheid=6b1fa032";
@@ -1028,6 +1028,9 @@ TEST_F(ServerTest, UserLanguageList)
   const auto r = zfs1_->GET("/ROOT%23%3F/skin/languages.js");
   EXPECT_EQ(r->body,
 R"EXPECTEDRESPONSE(const uiLanguages = [
+  {
+    "الإنجليزية": "ar"
+  },
   {
     "বাংলা": "bn"
   },
@@ -1061,6 +1064,9 @@ R"EXPECTEDRESPONSE(const uiLanguages = [
   {
     "kurdî": "ku-latn"
   },
+  {
+    "Lëtzebuergesch": "lb"
+  },
   {
     "македонски": "mk"
   },
@@ -1079,6 +1085,9 @@ R"EXPECTEDRESPONSE(const uiLanguages = [
   {
     "slovenčina": "sk"
   },
+  {
+    "slovenščina": "sl"
+  },
   {
     "Svenska": "sv"
   },