diff --git a/README.md b/README.md
index 9879ec2..37203cd 100644
--- a/README.md
+++ b/README.md
@@ -87,6 +87,7 @@ Automate releases with Conventional Commit Messages.
  | `group-pull-request-title-pattern` | sets the manifest pull request title for when releasing multiple packages grouped together in the one pull request                                                                                                                                                                                                                                            |
  |       `release-search-depth`       | when searching for the latest release SHAs, only consider the last N releases                                                                                                                                                                                                                                                                                 |
  |       `commit-search-depth`        | when fetching the list of commits to consider, only consider the last N commits                                                                                                                                                                                                                                                                               |
+|           `proxy-server`           | set proxy sever when you run this action behind a proxy. format is host:port e.g. proxy-host.com:8080                                                                                                                                                                                                                                                         |
 
 ## GitHub credentials
 
diff --git a/action.yml b/action.yml
index 8620db9..c481f61 100644
--- a/action.yml
+++ b/action.yml
@@ -160,6 +160,9 @@ inputs:
   commit-search-depth:
     description: 'when fetching the list of commits to consider, only consider the last N commits'
     required: false
+  proxy-server:
+    description: 'set proxy sever when you run this action behind a proxy. format is host:port e.g. proxy-host.com:8080'
+    required: false
 
 runs:
   using: 'node16'
diff --git a/dist/index.js b/dist/index.js
index c65bb34..05e99d9 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -26,7 +26,8 @@ function getGitHubInput () {
     repoUrl: core.getInput('repo-url') || process.env.GITHUB_REPOSITORY,
     apiUrl: core.getInput('github-api-url') || GITHUB_API_URL,
     graphqlUrl: (core.getInput('github-graphql-url') || '').replace(/\/graphql$/, '') || GITHUB_GRAPHQL_URL,
-    token: core.getInput('token', { required: true })
+    token: core.getInput('token', { required: true }),
+    proxyServer: core.getInput('proxy-server') || undefined
   }
 }
 
@@ -112,9 +113,16 @@ const releasePlease = {
 }
 
 function getGitHubInstance () {
-  const { token, defaultBranch, apiUrl, graphqlUrl, repoUrl } = getGitHubInput()
+  const { token, defaultBranch, apiUrl, graphqlUrl, repoUrl, proxyServer } = getGitHubInput()
   const [owner, repo] = repoUrl.split('/')
+
+  let proxy
+  if (proxyServer) {
+    const [host, port] = proxyServer.split(':')
+    proxy = { host, port }
+  }
   const githubCreateOpts = {
+    proxy,
     owner,
     repo,
     apiUrl,
diff --git a/index.js b/index.js
index 614235b..d4672ec 100644
--- a/index.js
+++ b/index.js
@@ -19,7 +19,8 @@ function getGitHubInput () {
     repoUrl: core.getInput('repo-url') || process.env.GITHUB_REPOSITORY,
     apiUrl: core.getInput('github-api-url') || GITHUB_API_URL,
     graphqlUrl: (core.getInput('github-graphql-url') || '').replace(/\/graphql$/, '') || GITHUB_GRAPHQL_URL,
-    token: core.getInput('token', { required: true })
+    token: core.getInput('token', { required: true }),
+    proxyServer: core.getInput('proxy-server') || undefined
   }
 }
 
@@ -105,9 +106,16 @@ const releasePlease = {
 }
 
 function getGitHubInstance () {
-  const { token, defaultBranch, apiUrl, graphqlUrl, repoUrl } = getGitHubInput()
+  const { token, defaultBranch, apiUrl, graphqlUrl, repoUrl, proxyServer } = getGitHubInput()
   const [owner, repo] = repoUrl.split('/')
+
+  let proxy
+  if (proxyServer) {
+    const [host, port] = proxyServer.split(':')
+    proxy = { host, port }
+  }
   const githubCreateOpts = {
+    proxy,
     owner,
     repo,
     apiUrl,