diff --git a/lib/MetaCPAN/Document/Release/Set.pm b/lib/MetaCPAN/Document/Release/Set.pm
index dda46b2eb..c052652dd 100644
--- a/lib/MetaCPAN/Document/Release/Set.pm
+++ b/lib/MetaCPAN/Document/Release/Set.pm
@@ -20,11 +20,13 @@ has query_release => (
         by_author
         by_author_and_name
         by_author_and_names
+        find
         get_contributors
         get_files
         latest_by_author
         latest_by_distribution
         modules
+        predecessor
         recent
         requires
         reverse_dependencies
@@ -41,31 +43,6 @@ sub _build_query_release {
     );
 }
 
-sub find {
-    my ( $self, $name ) = @_;
-    my $file = $self->filter( {
-        and => [
-            { term => { distribution => $name } },
-            { term => { status       => 'latest' } }
-        ]
-    } )->sort( [ { date => 'desc' } ] )->raw->first;
-    return unless $file;
-
-    my $data = $file->{_source}
-        || single_valued_arrayref_to_scalar( $file->{fields} );
-    return $data;
-}
-
-sub predecessor {
-    my ( $self, $name ) = @_;
-    return $self->filter( {
-        and => [
-            { term => { distribution => $name } },
-            { not  => { filter => { term => { status => 'latest' } } } },
-        ]
-    } )->sort( [ { date => 'desc' } ] )->first;
-}
-
 sub find_github_based {
     shift->filter( {
         and => [
diff --git a/lib/MetaCPAN/Query/Release.pm b/lib/MetaCPAN/Query/Release.pm
index 0c1d0ac46..512789106 100644
--- a/lib/MetaCPAN/Query/Release.pm
+++ b/lib/MetaCPAN/Query/Release.pm
@@ -1260,5 +1260,51 @@ sub _numify {
     version->new($ver)->numify;
 }
 
+sub predecessor {
+    my ( $self, $name ) = @_;
+
+    my $res = $self->es->search(
+        index => $self->index_name,
+        type  => 'release',
+        body  => {
+            query => {
+                bool => {
+                    must     => [ { term => { distribution => $name } }, ],
+                    must_not => [ { term => { status       => 'latest' } }, ],
+                },
+            },
+            sort => [ { date => 'desc' } ],
+            size => 1,
+        },
+    );
+    my ($release) = $res->{hits}{hits}[0];
+    return unless $release;
+    return $release->{_source};
+}
+
+sub find {
+    my ( $self, $name ) = @_;
+
+    my $res = $self->es->search(
+        index => $self->index_name,
+        type  => 'release',
+        body  => {
+            query => {
+                bool => {
+                    must => [
+                        { term => { distribution => $name } },
+                        { term => { status       => 'latest' } },
+                    ],
+                },
+            },
+            sort => [ { date => 'desc' } ],
+            size => 1,
+        },
+    );
+    my ($file) = $res->{hits}{hits}[0];
+    return undef unless $file;
+    return $file->{_source};
+}
+
 __PACKAGE__->meta->make_immutable;
 1;
diff --git a/lib/MetaCPAN/Server/Controller/Diff.pm b/lib/MetaCPAN/Server/Controller/Diff.pm
index 4e92c21d4..4a6c97181 100644
--- a/lib/MetaCPAN/Server/Controller/Diff.pm
+++ b/lib/MetaCPAN/Server/Controller/Diff.pm
@@ -33,9 +33,8 @@ sub release : Chained('index') : PathPart('release') : Args(1) {
 
     my ( $latest, $previous );
     try {
-        $latest = $c->model('CPAN::Release')->raw->find($name);
-        $previous
-            = $c->model('CPAN::Release')->raw->predecessor($name)->{_source};
+        $latest   = $c->model('CPAN::Release')->find($name);
+        $previous = $c->model('CPAN::Release')->predecessor($name);
     }
     catch {
         $c->detach('/not_found');