diff --git a/src/main/resources/db/changelog-20190531_000000-schema.xml b/src/main/resources/db/changelog-20190531_000000-schema.xml
new file mode 100644
index 0000000..51fffe6
--- /dev/null
+++ b/src/main/resources/db/changelog-20190531_000000-schema.xml
@@ -0,0 +1,18 @@
+<?xml version="1.1" encoding="UTF-8" standalone="no"?>
+<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                   xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.1.xsd">
+    <changeSet author="arefyev" id="20190525_000000-1">
+        <addColumn tableName="ping">
+            <column name="paper_id" type="integer"/>
+            <column name="grant_id" type="integer"/>
+            <column name="project_id" type="integer"/>
+        </addColumn>
+        <addForeignKeyConstraint baseTableName="ping" baseColumnNames="paper_id" constraintName="paper_fk" referencedTableName="paper"
+                                 referencedColumnNames="id"/>
+        <addForeignKeyConstraint baseTableName="ping" baseColumnNames="grant_id" constraintName="grant_fk" referencedTableName="grants"
+                                 referencedColumnNames="id"/>
+        <addForeignKeyConstraint baseTableName="ping" baseColumnNames="project_id" constraintName="project_fk" referencedTableName="project"
+                                 referencedColumnNames="id"/>
+    </changeSet>
+</databaseChangeLog>