diff --git a/src/main/resources/db/changelog/schema/yaml/add-fk/001-add-vets_specialties-fk.yaml b/src/main/resources/db/changelog/schema/yaml/add-fk/001-add-vets_specialties-fk.yaml
new file mode 100644
index 000000000..a91fe970f
--- /dev/null
+++ b/src/main/resources/db/changelog/schema/yaml/add-fk/001-add-vets_specialties-fk.yaml
@@ -0,0 +1,23 @@
+databaseChangeLog:
+  - changeSet:
+      id: 006-add-vet_specialties-fk
+      author: vsevolodkolmogorov
+      changes:
+        - addForeignKeyConstraint:
+            constraintName: fk_vets_specialties_vet
+            baseTableName: vet_specialties
+            baseColumnNames: vet_id
+            referencedTableName: vets
+            referencedColumnNames: id
+
+        - addForeignKeyConstraint:
+            constraintName: fk_vets_specialties_specialty
+            baseTableName: vet_specialties
+            baseColumnNames: specialty_id
+            referencedTableName: specialties
+            referencedColumnNames: id
+
+        - addUniqueConstraint:
+            tableName: vet_specialties
+            columnNames: vet_id, specialty_id
+            constraintName: uq_vets_specialties_vet_specialty
diff --git a/src/main/resources/db/changelog/schema/yaml/add-fk/002-add-pets-fk.yaml b/src/main/resources/db/changelog/schema/yaml/add-fk/002-add-pets-fk.yaml
new file mode 100644
index 000000000..44230f606
--- /dev/null
+++ b/src/main/resources/db/changelog/schema/yaml/add-fk/002-add-pets-fk.yaml
@@ -0,0 +1,18 @@
+databaseChangeLog:
+  - changeSet:
+      id: 012-add-pets-fk
+      author: vsevolodkolmogorov
+      changes:
+        - addForeignKeyConstraint:
+            constraintName: fk_pets_types
+            baseTableName: pets
+            baseColumnNames: type_id
+            referencedTableName: types
+            referencedColumnNames: id
+
+        - addForeignKeyConstraint:
+            constraintName: fk_pets_owner
+            baseTableName: pets
+            baseColumnNames: owner_id
+            referencedTableName: owners
+            referencedColumnNames: id
diff --git a/src/main/resources/db/changelog/schema/yaml/add-fk/003-add-visits-fk.yaml b/src/main/resources/db/changelog/schema/yaml/add-fk/003-add-visits-fk.yaml
new file mode 100644
index 000000000..e7e283184
--- /dev/null
+++ b/src/main/resources/db/changelog/schema/yaml/add-fk/003-add-visits-fk.yaml
@@ -0,0 +1,11 @@
+databaseChangeLog:
+  - changeSet:
+      id: 016-add-visits-fk
+      author: vsevolodkolmogorov
+      changes:
+        - addForeignKeyConstraint:
+            constraintName: fk_visits_pet
+            baseTableName: visits
+            baseColumnNames: pet_id
+            referencedTableName: pets
+            referencedColumnNames: id