diff --git a/ccm-sci-publications/sql/ccm-sci-publications/default/upgrade/6.6.3-6.6.4/add-journal-symbol.sql b/ccm-sci-publications/sql/ccm-sci-publications/default/upgrade/6.6.3-6.6.4/add-journal-symbol.sql
new file mode 100644
index 000000000..1596e2685
--- /dev/null
+++ b/ccm-sci-publications/sql/ccm-sci-publications/default/upgrade/6.6.3-6.6.4/add-journal-symbol.sql
@@ -0,0 +1,2 @@
+-- Add journal symbol column
+ALTER TABLE ct_journal ADD COLUMN symbol VARCHAR(128);
diff --git a/ccm-sci-publications/sql/ccm-sci-publications/default/upgrade/6.6.3-6.6.4/add-publication-fields.sql b/ccm-sci-publications/sql/ccm-sci-publications/default/upgrade/6.6.3-6.6.4/add-publication-fields.sql
new file mode 100644
index 000000000..d21c61bb5
--- /dev/null
+++ b/ccm-sci-publications/sql/ccm-sci-publications/default/upgrade/6.6.3-6.6.4/add-publication-fields.sql
@@ -0,0 +1,3 @@
+-- Add fields for year of first publication and language of the publication
+ALTER TABLE ct_publications ADD COLUMN firstPublished INTEGER;
+ALTER TABLE ct_publications ADD COLUMN lang VARCHAR(128);
\ No newline at end of file
diff --git a/ccm-sci-publications/sql/ccm-sci-publications/upgrade/postgres-6.6.3-6.6.4.sql b/ccm-sci-publications/sql/ccm-sci-publications/upgrade/postgres-6.6.3-6.6.4.sql
new file mode 100644
index 000000000..a58aa7649
--- /dev/null
+++ b/ccm-sci-publications/sql/ccm-sci-publications/upgrade/postgres-6.6.3-6.6.4.sql
@@ -0,0 +1,9 @@
+\echo 'ScientificCMS Publications module 6.6.3 -> 6.6.4 Upgrade script (PostgreSQL)'
+
+begin;
+
+\i ../default/upgrade/6.6.3-6.6.4/add-publication-fields.sql
+\i ../default/upgrade/6.6.3-6.6.4/add-journal-symbol.sql
+
+end;
+