diff --git a/dist/index.js b/dist/index.js
index 0128adea..f77ac134 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -440,7 +440,7 @@ exports.getScript = getScript;
 async function run() {
     try {
         if ((await utils.readEnv('ImageOS')) == 'ubuntu16') {
-            core.warning('Ubuntu 16.04 is deprecated.\nPlease upgrade to Ubuntu 18.04 or Ubuntu 20.04 - https://setup-php.com/i/452');
+            core.warning('setup-php will stop working on Ubuntu 16.04 from August 1, 2021. Please upgrade to Ubuntu 18.04 or Ubuntu 20.04 - https://setup-php.com/i/452');
         }
         const version = await utils.parseVersion(await utils.getInput('php-version', true));
         if (version) {
diff --git a/src/install.ts b/src/install.ts
index a994f9ba..7f8185ee 100644
--- a/src/install.ts
+++ b/src/install.ts
@@ -53,7 +53,7 @@ export async function run(): Promise<void> {
   try {
     if ((await utils.readEnv('ImageOS')) == 'ubuntu16') {
       core.warning(
-        'Ubuntu 16.04 is deprecated.\nPlease upgrade to Ubuntu 18.04 or Ubuntu 20.04 - https://setup-php.com/i/452'
+        'setup-php will stop working on Ubuntu 16.04 from August 1, 2021. Please upgrade to Ubuntu 18.04 or Ubuntu 20.04 - https://setup-php.com/i/452'
       );
     }
     const version: string = await utils.parseVersion(