diff --git a/Changes b/Changes
index 262f721..b88b243 100755
--- a/Changes
+++ b/Changes
@@ -1,9 +1,10 @@
-0.51 2023-07-21
+0.51 2023-09-18
         - Support defined log file in configuration. (diewald)
         - Remove experimental_client_registration setting
           and make client registration mandatory in OAuth
           (diewald)
         - Introduce 'reserved terms' in documentation (diewald)
+        - Support CQP in frontend (diewald)
 
 0.50 2023-05-08
         - Improvement of NKJP-annotation helper. (diewald)
diff --git a/kalamar.dict b/kalamar.dict
index 1166d80..e6332fe 100644
--- a/kalamar.dict
+++ b/kalamar.dict
@@ -106,6 +106,9 @@
       '#default-foundries' => 'Standard Foundries',
       'development' => 'Entwicklung',
       'faq' => 'FAQ'
+    },
+    QL => {
+      cqp => 'CQP (neu)'
     }
   },
   -en => {
@@ -163,6 +166,7 @@
       poliqarp => 'Poliqarp',
       cosmas2 => 'Cosmas II',
       annis => 'Annis QL',
+      cqp => 'CQP (new)',
       cql => 'CQL v1.2',
       fcsql => 'FCSQL'
     },
diff --git a/lib/Kalamar/Controller/Search.pm b/lib/Kalamar/Controller/Search.pm
index c2f48c0..54d1dc4 100644
--- a/lib/Kalamar/Controller/Search.pm
+++ b/lib/Kalamar/Controller/Search.pm
@@ -31,7 +31,7 @@
   my $v = $c->validation;
 
   $v->optional('q', 'trim')->size(1,4096);
-  $v->optional('ql')->in(qw/poliqarp cosmas2 annis cql fcsql/);
+  $v->optional('ql')->in(qw/poliqarp cosmas2 annis cqp cql fcsql/);
   $v->optional('collection', 'trim'); # Legacy
   $v->optional('cq', 'trim');         # New
   $v->optional('cutoff', 'trim')->in(qw/1 0 true false/);
diff --git a/package.json b/package.json
index a15edd7..7cdb258 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "Kalamar",
   "description": "Mojolicious-based Frontend for KorAP",
   "license": "BSD-2-Clause",
-  "version": "0.50.1",
+  "version": "0.51.2",
   "pluginVersion": "0.2.2",
   "engines": {
     "node": ">=6.0.0"
diff --git a/t/intro.t b/t/intro.t
index f93ea73..fe56167 100644
--- a/t/intro.t
+++ b/t/intro.t
@@ -19,6 +19,9 @@
   ->content_unlike(qr!onload!)
   ->text_is('#link-guided-tour', 'guided tour')
   ->text_is('nav > a[href=/doc/korap/kalamar]', 'V 0.47.999')
+  ->element_exists('select#ql-field option[value=poliqarp]')
+  ->element_exists('select#ql-field option[value=cqp]')
+  ->element_exists_not('select#ql-field option[value=noliqart]')
   ;
 
 # Only routed when existing
diff --git a/templates/partial/header.html.ep b/templates/partial/header.html.ep
index fe0ce0e..5622d32 100644
--- a/templates/partial/header.html.ep
+++ b/templates/partial/header.html.ep
@@ -17,7 +17,7 @@
 
     <%= loc 'with' %>
     <span class="select">
-      %= select_field 'ql', [[loc('QL_poliqarp') => 'poliqarp'], [loc('QL_cosmas2') => 'cosmas2'], [loc('QL_annis') => 'annis'], [loc('QL_cql') => 'cql'], [loc('QL_fcsql') => 'fcsql']], id => 'ql-field'
+      %= select_field 'ql', [[loc('QL_poliqarp') => 'poliqarp'], [loc('QL_cosmas2') => 'cosmas2'], [loc('QL_annis') => 'annis'], [loc('QL_cqp') => 'cqp'], [loc('QL_cql') => 'cql'], [loc('QL_fcsql') => 'fcsql']], id => 'ql-field'
     </span>
     <div class="button right">
       % param(cutoff => 1) unless param 'q';