diff --git a/src/checksum.ts b/src/checksum.ts
index c9199b9..8e72ed4 100644
--- a/src/checksum.ts
+++ b/src/checksum.ts
@@ -11,7 +11,7 @@ const CHECKSUMS = {
     amd64: "336093af8ebe969567b66fd035af3bd4f7e1c723ce680d6b4b5b2a1f79bc329e", // v0.14.2
   },
   windows: {
-    amd64: "", // v0.0.1
+    amd64: "sha256:4ce2409d5802e947b563e29dbd8e803525dc78b21996b0ecedb51ceb046911a3", // v1.0.0-int
   },
 };
 
diff --git a/src/install-agent.ts b/src/install-agent.ts
index ab384b6..19a361a 100644
--- a/src/install-agent.ts
+++ b/src/install-agent.ts
@@ -78,7 +78,6 @@ export async function installWindowsAgent(
     return false;
   }
 
-  // set up agent directory at C:\agent
   const agentDir = "C:\\agent";
   core.info(`Creating agent directory: ${agentDir}`);
   if (!fs.existsSync(agentDir)) {
@@ -93,67 +92,19 @@ export async function installWindowsAgent(
   );
   const agentExePath = path.join(agentDir, "agent.exe");
 
-  // uncomment to download agent from github
-  // const downloadPath = await tc.downloadTool(
-  //   `https://github.com/step-security/agent-releases/releases/download/v0.0.1/agent_0.0.1_windows_amd64.tar.gz`,
-  //   undefined,
-  //   auth
-  // );
-  // verifyChecksum(downloadPath, false, variant, process.platform);
+  const downloadPath = await tc.downloadTool(
+    `https://github.com/step-security/agent-releases/releases/download/v1.0.0-int/harden-runner-agent-windows_int_windows_amd64.tar.gz `,
+    undefined,
+    auth
+  );
+  verifyChecksum(downloadPath, false, variant, process.platform);
 
-  // const extractPath = await tc.extractTar(downloadPath);
-  // let cmd = "cp",
-  //   args = [path.join(extractPath, "agent.exe"), agentExePath];
+  const extractPath = await tc.extractTar(downloadPath);
 
-  // cp.execFileSync(cmd, args);
+  const extractedAgentPath = path.join(extractPath, "agent.exe");
+  fs.copyFileSync(extractedAgentPath, agentExePath);
+  core.info(`Copied agent from ${extractedAgentPath} to ${agentExePath}`);
 
-  // Download Windows agent from S3 - TODO: remove this later once github releases are available
-  // Get S3 URL from environment variable or GitHub Actions input
-  const s3Url = process.env.AGENT_S3_URL || core.getInput("agent-s3-url");
-
-  if (!s3Url) {
-    core.setFailed(
-      "S3 URL not configured. Please set AGENT_S3_URL environment variable or provide 'agent-s3-url' input."
-    );
-    return false;
-  }
-
-  const tarGzPath = path.join(agentDir, "agent_windows_amd64.tar.gz");
-
-  core.info(`Downloading Windows agent from S3...`);
-
-  try {
-    // Download tar.gz from S3 using curl
-    core.info(`Downloading from: ${s3Url}`);
-    cp.execSync(`curl -L -o "${tarGzPath}" "${s3Url}"`, { stdio: "inherit" });
-
-    if (!fs.existsSync(tarGzPath)) {
-      core.setFailed("Failed to download agent.tar.gz from S3");
-      return false;
-    }
-
-    core.info(`Downloaded tar.gz to: ${tarGzPath}`);
-
-    // Extract tar.gz
-    core.info("Extracting tar.gz...");
-    cp.execSync(`tar -xzf "${tarGzPath}" -C "${agentDir}"`, { stdio: "inherit" });
-
-    // Verify agent.exe exists after extraction
-    if (fs.existsSync(agentExePath)) {
-      core.info(`Agent extracted to: ${agentExePath}`);
-
-      // Clean up tar.gz
-      fs.unlinkSync(tarGzPath);
-    } else {
-      core.setFailed("agent.exe not found after extraction");
-      return false;
-    }
-  } catch (error) {
-    core.setFailed(`Failed to download Windows agent: ${error.message}`);
-    return false;
-  }
-
-  // Write config.json
   const configPath = path.join(agentDir, "config.json");
   fs.writeFileSync(configPath, configStr);
   core.info(`Created config file: ${configPath}`);
@@ -161,10 +112,6 @@ export async function installWindowsAgent(
   core.info("Starting Windows Agent...");
 
   try {
-    // start the agent process in the background
-    core.info(`Executing: ${agentExePath}`);
-
-    // set up log file for agent output
     const logPath = path.join(agentDir, "agent.log");
     const logStream = fs.openSync(logPath, 'a');
     core.info(`Agent logs will be written to: ${logPath}`);
@@ -178,13 +125,11 @@ export async function installWindowsAgent(
       shell: false
     });
 
-    // save the PID to a file for later termination
     const pidFile = path.join(agentDir, "agent.pid");
     fs.writeFileSync(pidFile, agentProcess.pid.toString());
     core.info(`Agent process started with PID: ${agentProcess.pid}`);
     core.info(`PID saved to: ${pidFile}`);
 
-    // unref the process so it can continue running independently
     agentProcess.unref();
 
     core.info("Windows Agent process started successfully");