diff --git a/src/db/migration/V20170411_1133__mantis8882.sql b/src/db/migration/V20170411_1133__mantis8882.sql
new file mode 100644
index 000000000..406866f36
--- /dev/null
+++ b/src/db/migration/V20170411_1133__mantis8882.sql
@@ -0,0 +1,7 @@
+declare
+    object_exists exception;
+    pragma exception_init (object_exists , -00955);
+begin
+	execute immediate 'ALTER TABLE LOG_CONFERENCIA ADD CAJA_ID NUMBER(15,0)';
+    exception when object_exists then null;
+end;
\ No newline at end of file
diff --git a/src/db/migration/V20170411_1134__mantis8882.sql b/src/db/migration/V20170411_1134__mantis8882.sql
new file mode 100644
index 000000000..34cbbcab4
--- /dev/null
+++ b/src/db/migration/V20170411_1134__mantis8882.sql
@@ -0,0 +1,9 @@
+declare
+    object_exists exception;
+    pragma exception_init (object_exists , -00955);
+begin
+	execute immediate 'ALTER TABLE LOG_CONFERENCIA
+					   ADD CONSTRAINT FK_LOGCONFERENCIA_CAJA FOREIGN KEY (CAJA_ID)
+					   REFERENCES CAJA (CAJA_ID)';
+    exception when object_exists then null;
+end;
\ No newline at end of file