diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 0aa135b..eb4f41b 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -6,9 +6,7 @@ on:
       - main
     tags:
       - 'v*'
-  pull_request:
-    branches: [ main ]
-    types: [ opened ]
+  pull_request: {}
 
 jobs:
   main:
@@ -31,11 +29,11 @@ jobs:
           --health-timeout 5s
           --health-retries 5
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 100
 
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         with:
           path: ~/.npm
           key: ${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}
@@ -43,9 +41,6 @@ jobs:
       - name: npm install
         run: npm ci
 
-      - name: npm lint
-        run: npm run lint
-
       - name: unit test
         run: npm run test
 
diff --git a/prisma/migrations/20240313142140_add_pair_liquidity_info_history/migration.sql b/prisma/migrations/20240313142140_add_pair_liquidity_info_history/migration.sql
index 1ed26c4..ce0f40f 100644
--- a/prisma/migrations/20240313142140_add_pair_liquidity_info_history/migration.sql
+++ b/prisma/migrations/20240313142140_add_pair_liquidity_info_history/migration.sql
@@ -33,7 +33,7 @@ CREATE UNIQUE INDEX "PairLiquidityInfoHistory_pairId_microBlockHash_key" ON "Pai
 CREATE UNIQUE INDEX "PairLiquidityInfoHistoryError_pairId_microBlockHash_error_key" ON "PairLiquidityInfoHistoryError"("pairId", "microBlockHash", "error");
 
 -- AddForeignKey
-ALTER TABLE "PairLiquidityInfoHistory" ADD CONSTRAINT "PairLiquidityInfoHistory_pairId_fkey" FOREIGN KEY ("pairId") REFERENCES "Pair"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+ALTER TABLE "PairLiquidityInfoHistory" ADD CONSTRAINT "PairLiquidityInfoHistory_pairId_fkey" FOREIGN KEY ("pairId") REFERENCES "Pair"("id") ON DELETE CASCADE ON UPDATE CASCADE;
 
 -- AddForeignKey
-ALTER TABLE "PairLiquidityInfoHistoryError" ADD CONSTRAINT "PairLiquidityInfoHistoryError_pairId_fkey" FOREIGN KEY ("pairId") REFERENCES "Pair"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+ALTER TABLE "PairLiquidityInfoHistoryError" ADD CONSTRAINT "PairLiquidityInfoHistoryError_pairId_fkey" FOREIGN KEY ("pairId") REFERENCES "Pair"("id") ON DELETE CASCADE ON UPDATE CASCADE;
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index c3ddf23..87acb9d 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -63,7 +63,7 @@ model PairLiquidityInfoHistory {
 
 model PairLiquidityInfoHistoryError {
   id             Int      @id @default(autoincrement())
-  pair           Pair     @relation(fields: [pairId], references: [id])
+  pair           Pair     @relation(fields: [pairId], references: [id], onDelete: Cascade)
   pairId         Int
   microBlockHash String
   error          String
diff --git a/test/pairs.e2e-spec.ts b/test/pairs.e2e-spec.ts
index f195fa3..6606f7e 100644
--- a/test/pairs.e2e-spec.ts
+++ b/test/pairs.e2e-spec.ts
@@ -1,11 +1,12 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import { INestApplication } from '@nestjs/common';
 import * as request from 'supertest';
-import { AppModule } from '../src/app.module';
-import { mockContext, listToken, sortByAddress } from './utils';
+import { listToken, mockContext, sortByAddress } from './utils';
 import createWorkerMethods from '../src/worker';
 import * as data from './data/context-mockups';
 import * as db from './utils/db';
+import { TokensModule } from '../src/api/tokens/module';
+import { PairsModule } from '../src/api/pairs/module';
 
 type WorkerMethods = ReturnType<typeof createWorkerMethods>;
 let activeWorker: WorkerMethods;
@@ -29,7 +30,7 @@ describe('pairs fetching (e2e)', () => {
 
   beforeEach(async () => {
     const moduleFixture: TestingModule = await Test.createTestingModule({
-      imports: [AppModule],
+      imports: [TokensModule, PairsModule],
     }).compile();
 
     app = moduleFixture.createNestApplication();
diff --git a/test/swap-routes.e2e-spec.ts b/test/swap-routes.e2e-spec.ts
index 127c945..7cbcfd5 100644
--- a/test/swap-routes.e2e-spec.ts
+++ b/test/swap-routes.e2e-spec.ts
@@ -1,12 +1,13 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import { INestApplication } from '@nestjs/common';
 import * as request from 'supertest';
-import { AppModule } from '../src/app.module';
 
-import { mockContext, listToken } from './utils';
+import { listToken, mockContext } from './utils';
 import worker from '../src/worker';
 import * as db from './utils/db';
 import * as data from './data/context-mockups';
+import { TokensModule } from '../src/api/tokens/module';
+import { PairsModule } from '../src/api/pairs/module';
 
 type WorkerMethods = ReturnType<typeof worker>;
 let activeWorker: WorkerMethods;
@@ -28,7 +29,7 @@ const initWorker = async (dataCtx: any) => {
 
 const initApp = async () => {
   const moduleFixture: TestingModule = await Test.createTestingModule({
-    imports: [AppModule],
+    imports: [TokensModule, PairsModule],
   }).compile();
 
   app = moduleFixture.createNestApplication();
diff --git a/test/tokens.e2e-spec.ts b/test/tokens.e2e-spec.ts
index e33ac85..08646e3 100644
--- a/test/tokens.e2e-spec.ts
+++ b/test/tokens.e2e-spec.ts
@@ -1,7 +1,6 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import { INestApplication } from '@nestjs/common';
 import * as request from 'supertest';
-import { AppModule } from '../src/app.module';
 
 import worker from '../src/worker';
 import { clean as cleanDb } from './utils/db';
@@ -9,6 +8,8 @@ import * as data from './data/context-mockups';
 import * as dto from '../src/dto';
 import * as utils from './utils';
 import { nonNullable } from '../src/lib/utils';
+import { TokensModule } from '../src/api/tokens/module';
+import { PairsModule } from '../src/api/pairs/module';
 
 type WorkerMethods = ReturnType<typeof worker>;
 let activeWorker: WorkerMethods;
@@ -32,7 +33,7 @@ describe('tokens fetching (e2e)', () => {
 
   beforeEach(async () => {
     const moduleFixture: TestingModule = await Test.createTestingModule({
-      imports: [AppModule],
+      imports: [TokensModule, PairsModule],
     }).compile();
 
     app = moduleFixture.createNestApplication();
@@ -486,7 +487,7 @@ describe('listed tokens management (e2e)', () => {
 
   beforeEach(async () => {
     const moduleFixture: TestingModule = await Test.createTestingModule({
-      imports: [AppModule],
+      imports: [TokensModule, PairsModule],
     }).compile();
 
     app = moduleFixture.createNestApplication();