diff --git a/src/db/migration/V20210104_1126__mantis21186.sql b/src/db/migration/V20210104_1126__mantis21186.sql
new file mode 100644
index 000000000..8ffee74f5
--- /dev/null
+++ b/src/db/migration/V20210104_1126__mantis21186.sql
@@ -0,0 +1,7 @@
+declare 
+  column_exists exception;
+  pragma exception_init (column_exists , -01430);
+begin 
+  execute immediate 'ALTER TABLE COMISSAO ADD RECEITA_GAP NUMBER(12,2)';
+  exception when column_exists then null;
+end;
\ No newline at end of file
diff --git a/src/db/postgresql/migration/V20210104_1126__mantis21186.sql b/src/db/postgresql/migration/V20210104_1126__mantis21186.sql
new file mode 100644
index 000000000..dd3dcd785
--- /dev/null
+++ b/src/db/postgresql/migration/V20210104_1126__mantis21186.sql
@@ -0,0 +1,6 @@
+DO $$
+BEGIN
+  ALTER TABLE COMISSAO ADD RECEITA_GAP NUMBER(12,2);
+  EXCEPTION WHEN duplicate_column THEN NULL;
+END
+$$;
\ No newline at end of file