diff --git a/docs/modules/ROOT/pages/api-hardhat-upgrades.adoc b/docs/modules/ROOT/pages/api-hardhat-upgrades.adoc
index 51764ad63..001a2fb18 100644
--- a/docs/modules/ROOT/pages/api-hardhat-upgrades.adoc
+++ b/docs/modules/ROOT/pages/api-hardhat-upgrades.adoc
@@ -84,3 +84,14 @@ async function transferProxyAdminOwnership(
   newAdmin: string,
 ): Promise<void>
 ----
+
+== silenceWarnings
+
+Silences all subsequent warnings about the use of unsafe flags. Prints a last warning before doing so.
+
+NOTE: This function is useful for tests, but its use in production deployment scripts is discouraged.
+
+[source,ts]
+----
+function silenceWarnings()
+----
diff --git a/docs/modules/ROOT/pages/api-truffle-upgrades.adoc b/docs/modules/ROOT/pages/api-truffle-upgrades.adoc
index 21a8dd8a4..086ee9fbe 100644
--- a/docs/modules/ROOT/pages/api-truffle-upgrades.adoc
+++ b/docs/modules/ROOT/pages/api-truffle-upgrades.adoc
@@ -89,3 +89,14 @@ async function transferProxyAdminOwnership(
   newAdmin: string,
 ): Promise<void>
 ----
+
+== silenceWarnings
+
+Silences all subsequent warnings about the use of unsafe flags. Prints a last warning before doing so.
+
+NOTE: This function is useful for tests, but its use in production deployment scripts is discouraged.
+
+[source,ts]
+----
+function silenceWarnings()
+----
diff --git a/packages/core/CHANGELOG.md b/packages/core/CHANGELOG.md
index d1a2110e1..24bff57d5 100644
--- a/packages/core/CHANGELOG.md
+++ b/packages/core/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Unreleased
+
+- Add `silenceWarnings` to emit a single warning and silence all subsequent ones. ([#228](https://github.com/OpenZeppelin/openzeppelin-upgrades/pull/228))
+
 ## 1.3.1 (2020-11-13)
 
 - Add missing artifact files in the package.
diff --git a/packages/core/src/validate.ts b/packages/core/src/validate.ts
index 826a73f37..e58163985 100644
--- a/packages/core/src/validate.ts
+++ b/packages/core/src/validate.ts
@@ -250,7 +250,7 @@ function processOverride(
     return !isException;
   });
 
-  if (exceptionsFound) {
+  if (exceptionsFound && !silenced) {
     console.error(
       '\n' +
         chalk.keyword('orange').bold('Warning: ') +
@@ -447,3 +447,17 @@ function* getEnumErrors(contractDef: ContractDefinition, decodeSrc: SrcDecoder):
     };
   }
 }
+
+let silenced = false;
+
+export function silenceWarnings(): void {
+  if (!silenced) {
+    console.error(
+      '\n' +
+        chalk.keyword('orange').bold('Warning: ') +
+        `All subsequent Upgrades warnings will be silenced.\n\n` +
+        `    Make sure you have manually checked all uses of unsafe flags.\n`,
+    );
+    silenced = true;
+  }
+}
diff --git a/packages/plugin-hardhat/CHANGELOG.md b/packages/plugin-hardhat/CHANGELOG.md
index 5d2798281..5c78a4751 100644
--- a/packages/plugin-hardhat/CHANGELOG.md
+++ b/packages/plugin-hardhat/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Unreleased
+
+- Add `silenceWarnings` to emit a single warning and silence all subsequent ones. ([#228](https://github.com/OpenZeppelin/openzeppelin-upgrades/pull/228))
+
 ## 1.3.1 (2020-11-18)
 
 - Allow ommitting `args` in `deployProxy` when it's an empty array.
diff --git a/packages/plugin-hardhat/src/index.ts b/packages/plugin-hardhat/src/index.ts
index 4e990b8dd..1b62559d7 100644
--- a/packages/plugin-hardhat/src/index.ts
+++ b/packages/plugin-hardhat/src/index.ts
@@ -26,8 +26,10 @@ extendEnvironment(hre => {
     const { makeChangeProxyAdmin, makeTransferProxyAdminOwnership } = require('./admin');
     const { makeDeployProxy } = require('./deploy-proxy');
     const { makeUpgradeProxy, makePrepareUpgrade } = require('./upgrade-proxy');
+    const { silenceWarnings } = require('@openzeppelin/upgrades-core');
 
     return {
+      silenceWarnings,
       deployProxy: makeDeployProxy(hre),
       upgradeProxy: makeUpgradeProxy(hre),
       prepareUpgrade: makePrepareUpgrade(hre),
diff --git a/packages/plugin-hardhat/src/type-extensions.ts b/packages/plugin-hardhat/src/type-extensions.ts
index 7339d506a..a074188d8 100644
--- a/packages/plugin-hardhat/src/type-extensions.ts
+++ b/packages/plugin-hardhat/src/type-extensions.ts
@@ -1,5 +1,6 @@
 import 'hardhat/types/runtime';
 
+import type { silenceWarnings } from '@openzeppelin/upgrades-core';
 import type { DeployFunction } from './deploy-proxy';
 import type { UpgradeFunction, PrepareUpgradeFunction } from './upgrade-proxy';
 
@@ -9,6 +10,7 @@ declare module 'hardhat/types/runtime' {
       deployProxy: DeployFunction;
       upgradeProxy: UpgradeFunction;
       prepareUpgrade: PrepareUpgradeFunction;
+      silenceWarnings: typeof silenceWarnings;
     };
   }
 }
diff --git a/packages/plugin-hardhat/test/happy-path-with-enums.js b/packages/plugin-hardhat/test/happy-path-with-enums.js
index 09079e788..51bf576c0 100644
--- a/packages/plugin-hardhat/test/happy-path-with-enums.js
+++ b/packages/plugin-hardhat/test/happy-path-with-enums.js
@@ -2,6 +2,8 @@ const test = require('ava');
 
 const { ethers, upgrades } = require('hardhat');
 
+upgrades.silenceWarnings();
+
 test.before(async t => {
   t.context.Action = await ethers.getContractFactory('Action');
   t.context.ActionV2 = await ethers.getContractFactory('ActionV2');
diff --git a/packages/plugin-hardhat/test/happy-path-with-structs.js b/packages/plugin-hardhat/test/happy-path-with-structs.js
index 45c673bab..f4042111b 100644
--- a/packages/plugin-hardhat/test/happy-path-with-structs.js
+++ b/packages/plugin-hardhat/test/happy-path-with-structs.js
@@ -2,6 +2,8 @@ const test = require('ava');
 
 const { ethers, upgrades } = require('hardhat');
 
+upgrades.silenceWarnings();
+
 test.before(async t => {
   t.context.Portfolio = await ethers.getContractFactory('Portfolio');
   t.context.PortfolioV2 = await ethers.getContractFactory('PortfolioV2');
diff --git a/packages/plugin-hardhat/test/linked-libraries.js b/packages/plugin-hardhat/test/linked-libraries.js
index 611be6de4..c5bd18ba4 100644
--- a/packages/plugin-hardhat/test/linked-libraries.js
+++ b/packages/plugin-hardhat/test/linked-libraries.js
@@ -4,6 +4,8 @@ const { ethers, upgrades, artifacts } = require('hardhat');
 
 const testAddress = '0x1E6876a6C2757de611c9F12B23211dBaBd1C9028';
 
+upgrades.silenceWarnings();
+
 test('without flag', async t => {
   // Deploying library
   const safeMathLib = await deployLibrary('SafeMath');
diff --git a/packages/plugin-truffle/CHANGELOG.md b/packages/plugin-truffle/CHANGELOG.md
index f3cbe338b..f89599950 100644
--- a/packages/plugin-truffle/CHANGELOG.md
+++ b/packages/plugin-truffle/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Unreleased
+
+- Add `silenceWarnings` to emit a single warning and silence all subsequent ones. ([#228](https://github.com/OpenZeppelin/openzeppelin-upgrades/pull/228))
+
 ## 1.2.5 (2020-11-18)
 
 - Allow ommitting `args` in `deployProxy` when it's an empty array.
diff --git a/packages/plugin-truffle/src/index.ts b/packages/plugin-truffle/src/index.ts
index 0fb83a491..fb8450c81 100644
--- a/packages/plugin-truffle/src/index.ts
+++ b/packages/plugin-truffle/src/index.ts
@@ -1,3 +1,5 @@
 export * from './deploy-proxy';
 export * from './upgrade-proxy';
 export { admin } from './admin';
+
+export { silenceWarnings } from '@openzeppelin/upgrades-core';
diff --git a/packages/plugin-truffle/test.sh b/packages/plugin-truffle/test.sh
index 2ce7070df..7951f956f 100644
--- a/packages/plugin-truffle/test.sh
+++ b/packages/plugin-truffle/test.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 rimraf test/.openzeppelin
 
-yarn --cwd test truffle test
+yarn --cwd test truffle test "$@"
diff --git a/packages/plugin-truffle/test/migrations/1_initial_migration.js b/packages/plugin-truffle/test/migrations/1_initial_migration.js
index 5ec88e464..0b545e725 100644
--- a/packages/plugin-truffle/test/migrations/1_initial_migration.js
+++ b/packages/plugin-truffle/test/migrations/1_initial_migration.js
@@ -1,3 +1,7 @@
+const upgrades = require('@openzeppelin/truffle-upgrades');
+
+upgrades.silenceWarnings();
+
 const Migrations = artifacts.require('Migrations');
 
 module.exports = function (deployer) {